Merge remote-tracking branch 'remotes/clickhouse/master' into sevirov-DOCSUP-8940-edit_and_translate_to_russian_deltasumtimestamp

2024-11-25 17:12:03 +00:00 · 2021-05-10 23:16:58 +03:00 · 2021-05-10 23:16:58 +03:00 · 10eaa83a48
commit 10eaa83a48
parent 32cfb29edf 4a22924ed5
270 changed files with 10523 additions and 1688 deletions
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@ -169,8 +169,8 @@ endif ()
 option(ENABLE_TESTS "Provide unit_test_dbms target with Google.Test unit tests" ON)
 option(ENABLE_EXAMPLES "Build all example programs in 'examples' subdirectories" OFF)

-if (OS_LINUX AND NOT UNBUNDLED AND MAKE_STATIC_LIBRARIES AND NOT SPLIT_SHARED_LIBRARIES AND CMAKE_VERSION VERSION_GREATER "3.9.0")
-    # Only for Linux, x86_64.
+if (OS_LINUX AND (ARCH_AMD64 OR ARCH_AARCH64) AND NOT UNBUNDLED AND MAKE_STATIC_LIBRARIES AND NOT SPLIT_SHARED_LIBRARIES AND CMAKE_VERSION VERSION_GREATER "3.9.0")
+    # Only for Linux, x86_64 or aarch64.
    option(GLIBC_COMPATIBILITY "Enable compatibility with older glibc libraries." ON)
 elseif(GLIBC_COMPATIBILITY)
    message (${RECONFIGURE_MESSAGE_LEVEL} "Glibc compatibility cannot be enabled in current configuration")
--- a/base/daemon/SentryWriter.cpp
+++ b/base/daemon/SentryWriter.cpp
@ -102,7 +102,7 @@ void SentryWriter::initialize(Poco::Util::LayeredConfiguration & config)
    auto * logger = &Poco::Logger::get("SentryWriter");
    if (config.getBool("send_crash_reports.enabled", false))
    {
-        if (debug || (strlen(VERSION_OFFICIAL) > 0))
+        if (debug || (strlen(VERSION_OFFICIAL) > 0)) //-V560
        {
            enabled = true;
        }
--- a/base/glibc-compatibility/CMakeLists.txt
+++ b/base/glibc-compatibility/CMakeLists.txt
@ -15,7 +15,7 @@ if (GLIBC_COMPATIBILITY)

    add_headers_and_sources(glibc_compatibility .)
    add_headers_and_sources(glibc_compatibility musl)
-    if (ARCH_ARM)
+    if (ARCH_AARCH64)
        list (APPEND glibc_compatibility_sources musl/aarch64/syscall.s musl/aarch64/longjmp.s)
        set (musl_arch_include_dir musl/aarch64)
    elseif (ARCH_AMD64)
--- a/base/glibc-compatibility/musl/lgamma.c
+++ b/base/glibc-compatibility/musl/lgamma.c
@ -78,6 +78,9 @@
 *
 */

+// Disable warnings by PVS-Studio
+//-V::GA
+
 static const double
 pi  =  3.14159265358979311600e+00, /* 0x400921FB, 0x54442D18 */
 a0  =  7.72156649015328655494e-02, /* 0x3FB3C467, 0xE37DB0C8 */
--- a/base/glibc-compatibility/musl/lgammal.c
+++ b/base/glibc-compatibility/musl/lgammal.c
@ -85,6 +85,9 @@
 *
 */

+// Disable warnings by PVS-Studio
+//-V::GA
+
 #include <stdint.h>
 #include <math.h>
 #include "libm.h"
--- a/base/glibc-compatibility/musl/libm.h
+++ b/base/glibc-compatibility/musl/libm.h
@ -155,7 +155,7 @@ static inline long double fp_barrierl(long double x)
 static inline void fp_force_evalf(float x)
 {
 	volatile float y;
-	y = x;
+	y = x; //-V1001
 }
 #endif

@ -164,7 +164,7 @@ static inline void fp_force_evalf(float x)
 static inline void fp_force_eval(double x)
 {
 	volatile double y;
-	y = x;
+	y = x; //-V1001
 }
 #endif

@ -173,7 +173,7 @@ static inline void fp_force_eval(double x)
 static inline void fp_force_evall(long double x)
 {
 	volatile long double y;
-	y = x;
+	y = x; //-V1001
 }
 #endif

--- a/base/glibc-compatibility/musl/powf.c
+++ b/base/glibc-compatibility/musl/powf.c
@ -3,6 +3,9 @@
 * SPDX-License-Identifier: MIT
 */

+// Disable warnings by PVS-Studio
+//-V::GA
+
 #include <math.h>
 #include <stdint.h>
 #include "libm.h"
--- a/base/loggers/Loggers.cpp
+++ b/base/loggers/Loggers.cpp
@ -40,7 +40,7 @@ void Loggers::buildLoggers(Poco::Util::AbstractConfiguration & config, Poco::Log
            split->addTextLog(log, text_log_max_priority);

    auto current_logger = config.getString("logger", "");
-    if (config_logger == current_logger)
+    if (config_logger == current_logger) //-V1051
        return;

    config_logger = current_logger;
--- a/base/pcg-random/pcg_extras.hpp
+++ b/base/pcg-random/pcg_extras.hpp
@ -447,69 +447,6 @@ inline SrcIter uneven_copy(SrcIter src_first,
                            std::integral_constant<bool, DEST_IS_SMALLER>{});
 }

-/* generate_to, fill in a fixed-size array of integral type using a SeedSeq
- * (actually works for any random-access iterator)
- */
-
-template <size_t size, typename SeedSeq, typename DestIter>
-inline void generate_to_impl(SeedSeq&& generator, DestIter dest,
-                             std::true_type)
-{
-    generator.generate(dest, dest+size);
-}
-
-template <size_t size, typename SeedSeq, typename DestIter>
-void generate_to_impl(SeedSeq&& generator, DestIter dest,
-                      std::false_type)
-{
-    typedef typename std::iterator_traits<DestIter>::value_type dest_t;
-    constexpr auto DEST_SIZE = sizeof(dest_t);
-    constexpr auto GEN_SIZE  = sizeof(uint32_t);
-
-    constexpr bool GEN_IS_SMALLER = GEN_SIZE < DEST_SIZE;
-    constexpr size_t FROM_ELEMS =
-        GEN_IS_SMALLER
-            ? size * ((DEST_SIZE+GEN_SIZE-1) / GEN_SIZE)
-            : (size + (GEN_SIZE / DEST_SIZE) - 1)
-                / ((GEN_SIZE / DEST_SIZE) + GEN_IS_SMALLER);
-                        //  this odd code ^^^^^^^^^^^^^^^^^ is work-around for
-                        //  a bug: http://llvm.org/bugs/show_bug.cgi?id=21287
-
-    if (FROM_ELEMS <= 1024) {
-        uint32_t buffer[FROM_ELEMS];
-        generator.generate(buffer, buffer+FROM_ELEMS);
-        uneven_copy(buffer, dest, dest+size);
-    } else {
-        uint32_t* buffer = static_cast<uint32_t*>(malloc(GEN_SIZE * FROM_ELEMS));
-        generator.generate(buffer, buffer+FROM_ELEMS);
-        uneven_copy(buffer, dest, dest+size);
-        free(static_cast<void*>(buffer));
-    }
-}
-
-template <size_t size, typename SeedSeq, typename DestIter>
-inline void generate_to(SeedSeq&& generator, DestIter dest)
-{
-    typedef typename std::iterator_traits<DestIter>::value_type dest_t;
-    constexpr bool IS_32BIT = sizeof(dest_t) == sizeof(uint32_t);
-
-    generate_to_impl<size>(std::forward<SeedSeq>(generator), dest,
-                           std::integral_constant<bool, IS_32BIT>{});
-}
-
-/* generate_one, produce a value of integral type using a SeedSeq
- * (optionally, we can have it produce more than one and pick which one
- * we want)
- */
-
-template <typename UInt, size_t i = 0UL, size_t N = i+1UL, typename SeedSeq>
-inline UInt generate_one(SeedSeq&& generator)
-{
-    UInt result[N];
-    generate_to<N>(std::forward<SeedSeq>(generator), result);
-    return result[i];
-}
-
 template <typename RngType>
 auto bounded_rand(RngType& rng, typename RngType::result_type upper_bound)
        -> typename RngType::result_type
@ -517,7 +454,7 @@ auto bounded_rand(RngType& rng, typename RngType::result_type upper_bound)
    typedef typename RngType::result_type rtype;
    rtype threshold = (RngType::max() - RngType::min() + rtype(1) - upper_bound)
                    % upper_bound;
-    for (;;) {
+    for (;;) { //-V1044
        rtype r = rng() - RngType::min();
        if (r >= threshold)
            return r % upper_bound;
--- a/base/pcg-random/pcg_random.hpp
+++ b/base/pcg-random/pcg_random.hpp
@ -928,7 +928,7 @@ struct rxs_m_xs_mixin {
        constexpr bitcount_t shift = bits - xtypebits;
        constexpr bitcount_t mask = (1 << opbits) - 1;
        bitcount_t rshift =
-            opbits ? bitcount_t(internal >> (bits - opbits)) & mask : 0;
+            opbits ? bitcount_t(internal >> (bits - opbits)) & mask : 0; //-V547
        internal ^= internal >> (opbits + rshift);
        internal *= mcg_multiplier<itype>::multiplier();
        xtype result = internal >> shift;
@ -950,7 +950,7 @@ struct rxs_m_xs_mixin {

        internal *= mcg_unmultiplier<itype>::unmultiplier();

-        bitcount_t rshift = opbits ? (internal >> (bits - opbits)) & mask : 0;
+        bitcount_t rshift = opbits ? (internal >> (bits - opbits)) & mask : 0; //-V547
        internal = unxorshift(internal, bits, opbits + rshift);

        return internal;
@ -975,7 +975,7 @@ struct rxs_m_mixin {
                                 :                    2;
        constexpr bitcount_t shift = bits - xtypebits;
        constexpr bitcount_t mask = (1 << opbits) - 1;
-        bitcount_t rshift = opbits ? (internal >> (bits - opbits)) & mask : 0;
+        bitcount_t rshift = opbits ? (internal >> (bits - opbits)) & mask : 0; //-V547
        internal ^= internal >> (opbits + rshift);
        internal *= mcg_multiplier<itype>::multiplier();
        xtype result = internal >> shift;
@ -1366,7 +1366,7 @@ void extended<table_pow2,advance_pow2,baseclass,extvalclass,kdd>::selfinit()
    //      - any strange correlations would only be apparent if we
    //        were to backstep the generator so that the base generator
    //        was generating the same values again
-    result_type xdiff = baseclass::operator()() - baseclass::operator()();
+    result_type xdiff = baseclass::operator()() - baseclass::operator()(); //-V501
    for (size_t i = 0; i < table_size; ++i) {
        data_[i] = baseclass::operator()() ^ xdiff;
    }
--- a/cmake/find/llvm.cmake
+++ b/cmake/find/llvm.cmake
@ -2,7 +2,7 @@ if (APPLE OR SPLIT_SHARED_LIBRARIES OR NOT ARCH_AMD64)
    set (ENABLE_EMBEDDED_COMPILER OFF CACHE INTERNAL "")
 endif()

-option (ENABLE_EMBEDDED_COMPILER "Set to TRUE to enable support for 'compile_expressions' option for query execution" ${ENABLE_LIBRARIES})
+option (ENABLE_EMBEDDED_COMPILER "Enable support for 'compile_expressions' option for query execution" ON)
 # Broken in macos. TODO: update clang, re-test, enable on Apple
 if (ENABLE_EMBEDDED_COMPILER AND NOT SPLIT_SHARED_LIBRARIES AND ARCH_AMD64 AND NOT (SANITIZE STREQUAL "undefined"))
    option (USE_INTERNAL_LLVM_LIBRARY "Use bundled or system LLVM library." ${NOT_UNBUNDLED})
--- a/docker/test/fasttest/run.sh
+++ b/docker/test/fasttest/run.sh
@ -370,6 +370,10 @@ function run_tests

        # Depends on AWS
        01801_s3_cluster
+
+        # Depends on LLVM JIT
+        01852_jit_if
+        01865_jit_comparison_constant_result
    )

    (time clickhouse-test --hung-check -j 8 --order=random --use-skip-list --no-long --testname --shard --zookeeper --skip "${TESTS_TO_SKIP[@]}" -- "$FASTTEST_FOCUS" 2>&1 ||:) | ts '%Y-%m-%d %H:%M:%S' | tee "$FASTTEST_OUTPUT/test_log.txt"
--- a/docker/test/fuzzer/query-fuzzer-tweaks-users.xml
+++ b/docker/test/fuzzer/query-fuzzer-tweaks-users.xml
@ -14,11 +14,6 @@
                <max_memory_usage>
                    <max>10G</max>
                </max_memory_usage>
-
-                <!-- Not ready for production -->
-                <compile_expressions>
-                    <readonly />
-                </compile_expressions>
            </constraints>
        </default>
    </profiles>
--- a/docker/test/testflows/runner/Dockerfile
+++ b/docker/test/testflows/runner/Dockerfile
@ -35,7 +35,7 @@ RUN apt-get update \
 ENV TZ=Europe/Moscow
 RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone

-RUN pip3 install urllib3 testflows==1.6.74 docker-compose docker dicttoxml kazoo tzlocal
+RUN pip3 install urllib3 testflows==1.6.74 docker-compose docker dicttoxml kazoo tzlocal python-dateutil numpy

 ENV DOCKER_CHANNEL stable
 ENV DOCKER_VERSION 17.09.1-ce
@ -74,4 +74,3 @@ VOLUME /var/lib/docker
 EXPOSE 2375
 ENTRYPOINT ["dockerd-entrypoint.sh"]
 CMD ["sh", "-c", "python3 regression.py --no-color -o classic --local --clickhouse-binary-path ${CLICKHOUSE_TESTS_SERVER_BIN_PATH} --log test.log ${TESTFLOWS_OPTS}; cat test.log | tfs report results --format json > results.json; /usr/local/bin/process_testflows_result.py || echo -e 'failure\tCannot parse results' > check_status.tsv"]
-
--- a/docs/en/engines/table-engines/integrations/s3.md
+++ b/docs/en/engines/table-engines/integrations/s3.md
@ -140,6 +140,7 @@ The following settings can be specified in configuration file for given endpoint
 -   `endpoint` — Specifies prefix of an endpoint. Mandatory.
 -   `access_key_id` and `secret_access_key` — Specifies credentials to use with given endpoint. Optional.
 -   `use_environment_credentials` — If set to `true`, S3 client will try to obtain credentials from environment variables and [Amazon EC2](https://en.wikipedia.org/wiki/Amazon_Elastic_Compute_Cloud) metadata for given endpoint. Optional, default value is `false`.
+-   `region` — Specifies S3 region name. Optional.
 -   `use_insecure_imds_request` — If set to `true`, S3 client will use insecure IMDS request while obtaining credentials from Amazon EC2 metadata. Optional, default value is `false`.
 -   `header` —  Adds specified HTTP header to a request to given endpoint. Optional, can be speficied multiple times.
 -   `server_side_encryption_customer_key_base64` — If specified, required headers for accessing S3 objects with SSE-C encryption will be set. Optional.
@ -152,6 +153,7 @@ The following settings can be specified in configuration file for given endpoint
        <endpoint>https://storage.yandexcloud.net/my-test-bucket-768/</endpoint>
        <!-- <access_key_id>ACCESS_KEY_ID</access_key_id> -->
        <!-- <secret_access_key>SECRET_ACCESS_KEY</secret_access_key> -->
+        <!-- <region>us-west-1</region> -->
        <!-- <use_environment_credentials>false</use_environment_credentials> -->
        <!-- <use_insecure_imds_request>false</use_insecure_imds_request> -->
        <!-- <header>Authorization: Bearer SOME-TOKEN</header> -->
--- a/docs/en/engines/table-engines/mergetree-family/mergetree.md
+++ b/docs/en/engines/table-engines/mergetree-family/mergetree.md
@ -739,6 +739,7 @@ Configuration markup:
            <endpoint>https://storage.yandexcloud.net/my-bucket/root-path/</endpoint>
            <access_key_id>your_access_key_id</access_key_id>
            <secret_access_key>your_secret_access_key</secret_access_key>
+            <region></region>
            <server_side_encryption_customer_key_base64>your_base64_encoded_customer_key</server_side_encryption_customer_key_base64>
            <proxy>
                <uri>http://proxy1</uri>
@ -764,6 +765,7 @@ Required parameters:
 -   `secret_access_key` — S3 secret access key.

 Optional parameters:    
+-   `region` — S3 region name.
 -   `use_environment_credentials` — Reads AWS credentials from the Environment variables AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY and AWS_SESSION_TOKEN if they exist. Default value is `false`.
 -   `use_insecure_imds_request` — If set to `true`, S3 client will use insecure IMDS request while obtaining credentials from Amazon EC2 metadata. Default value is `false`.
 -   `proxy` — Proxy configuration for S3 endpoint. Each `uri` element inside `proxy` block should contain a proxy URL. 
--- a/docs/en/operations/system-tables/dictionaries.md
+++ b/docs/en/operations/system-tables/dictionaries.md
@ -21,6 +21,7 @@ Columns:
 -   `bytes_allocated` ([UInt64](../../sql-reference/data-types/int-uint.md#uint-ranges)) — Amount of RAM allocated for the dictionary.
 -   `query_count` ([UInt64](../../sql-reference/data-types/int-uint.md#uint-ranges)) — Number of queries since the dictionary was loaded or since the last successful reboot.
 -   `hit_rate` ([Float64](../../sql-reference/data-types/float.md)) — For cache dictionaries, the percentage of uses for which the value was in the cache.
+-   `found_rate` ([Float64](../../sql-reference/data-types/float.md)) — The percentage of uses for which the value was found.
 -   `element_count` ([UInt64](../../sql-reference/data-types/int-uint.md#uint-ranges)) — Number of items stored in the dictionary.
 -   `load_factor` ([Float64](../../sql-reference/data-types/float.md)) — Percentage filled in the dictionary (for a hashed dictionary, the percentage filled in the hash table).
 -   `source` ([String](../../sql-reference/data-types/string.md)) — Text describing the [data source](../../sql-reference/dictionaries/external-dictionaries/external-dicts-dict-sources.md) for the dictionary.
@ -60,4 +61,4 @@ SELECT * FROM system.dictionaries
 └──────────┴──────┴────────┴─────────────┴──────┴────────┴──────────────────────────────────────┴─────────────────────┴─────────────────┴─────────────┴──────────┴───────────────┴───────────────────────┴────────────────────────────┴──────────────┴──────────────┴─────────────────────┴──────────────────────────────┘───────────────────────┴────────────────┘
 ```

-[Original article](https://clickhouse.tech/docs/en/operations/system_tables/dictionaries) <!--hide-->
+[Original article](https://clickhouse.tech/docs/en/operations/system_tables/dictionaries) <!--hide-->
--- a/docs/en/sql-reference/aggregate-functions/reference/quantiletdigestweighted.md
+++ b/docs/en/sql-reference/aggregate-functions/reference/quantiletdigestweighted.md
@ -12,6 +12,9 @@ The result depends on the order of running the query, and is nondeterministic.

 When using multiple `quantile*` functions with different levels in a query, the internal states are not combined (that is, the query works less efficiently than it could). In this case, use the [quantiles](../../../sql-reference/aggregate-functions/reference/quantiles.md#quantiles) function.

+!!! note "Note"
+    Using `quantileTDigestWeighted` [is not recommended for tiny data sets](https://github.com/tdunning/t-digest/issues/167#issuecomment-828650275) and can lead to significat error. In this case, consider possibility of using [`quantileTDigest`](../../../sql-reference/aggregate-functions/reference/quantiletdigest.md) instead.
+
 **Syntax**

 ``` sql
--- a/docs/ru/engines/table-engines/integrations/s3.md
+++ b/docs/ru/engines/table-engines/integrations/s3.md
@ -84,6 +84,7 @@ SELECT * FROM s3_engine_table LIMIT 2;
 -   `access_key_id` и `secret_access_key` — указывают учетные данные для использования с данной точкой приема запроса.
 -   `use_environment_credentials` — если `true`, S3-клиент будет пытаться получить учетные данные из переменных среды и метаданных [Amazon EC2](https://ru.wikipedia.org/wiki/Amazon_EC2) для данной точки приема запроса. Значение по умолчанию — `false`.
 -   `use_insecure_imds_request` — признак, нужно ли использовать менее безопасное соединение при выполнении запроса к IMDS при получении учётных данных из метаданных Amazon EC2. Значение по умолчанию — `false`.
+-   `region` — название региона S3.
 -   `header` — добавляет указанный HTTP-заголовок к запросу на заданную точку приема запроса. Может быть определен несколько раз.
 -   `server_side_encryption_customer_key_base64` — устанавливает необходимые заголовки для доступа к объектам S3 с шифрованием SSE-C. 

@ -95,6 +96,7 @@ SELECT * FROM s3_engine_table LIMIT 2;
        <endpoint>https://storage.yandexcloud.net/my-test-bucket-768/</endpoint>
        <!-- <access_key_id>ACCESS_KEY_ID</access_key_id> -->
        <!-- <secret_access_key>SECRET_ACCESS_KEY</secret_access_key> -->
+        <!-- <region>us-west-1</region> -->
        <!-- <use_environment_credentials>false</use_environment_credentials> -->
 		<!-- <use_insecure_imds_request>false</use_insecure_imds_request> -->
        <!-- <header>Authorization: Bearer SOME-TOKEN</header> -->
--- a/docs/ru/engines/table-engines/mergetree-family/mergetree.md
+++ b/docs/ru/engines/table-engines/mergetree-family/mergetree.md
@ -727,6 +727,7 @@ SETTINGS storage_policy = 'moving_from_ssd_to_hdd'
            <endpoint>https://storage.yandexcloud.net/my-bucket/root-path/</endpoint>
            <access_key_id>your_access_key_id</access_key_id>
            <secret_access_key>your_secret_access_key</secret_access_key>
+            <region></region>
            <proxy>
                <uri>http://proxy1</uri>
                <uri>http://proxy2</uri>
@ -753,6 +754,7 @@ SETTINGS storage_policy = 'moving_from_ssd_to_hdd'

 Необязательные параметры:   

+-   `region` — название региона S3.
 -   `use_environment_credentials` — признак, нужно ли считывать учетные данные AWS из сетевого окружения, а также из переменных окружения `AWS_ACCESS_KEY_ID`, `AWS_SECRET_ACCESS_KEY` и `AWS_SESSION_TOKEN`, если они есть. Значение по умолчанию: `false`.
 -   `use_insecure_imds_request` — признак, нужно ли использовать менее безопасное соединение при выполнении запроса к IMDS при получении учётных данных из метаданных Amazon EC2. Значение по умолчанию: `false`.
 -   `proxy` — конфигурация прокси-сервера для конечной точки S3. Каждый элемент `uri` внутри блока `proxy` должен содержать URL прокси-сервера. 
--- a/docs/ru/sql-reference/aggregate-functions/reference/quantiletdigestweighted.md
+++ b/docs/ru/sql-reference/aggregate-functions/reference/quantiletdigestweighted.md
@ -12,6 +12,9 @@ toc_priority: 208

 Внутренние состояния функций `quantile*` не объединяются, если они используются в одном запросе. Если вам необходимо вычислить квантили нескольких уровней, используйте функцию [quantiles](#quantiles), это повысит эффективность запроса.

+!!! note "Примечание"
+    Использование `quantileTDigestWeighted` [не рекомендуется для небольших наборов данных](https://github.com/tdunning/t-digest/issues/167#issuecomment-828650275) и может привести к значительной ошибке. Рассмотрите возможность использования [`quantileTDigest`](../../../sql-reference/aggregate-functions/reference/quantiletdigest.md) в таких случаях.
+
 **Синтаксис**

 ``` sql
--- a/programs/library-bridge/SharedLibraryHandler.h
+++ b/programs/library-bridge/SharedLibraryHandler.h
@ -23,6 +23,8 @@ public:

    SharedLibraryHandler(const SharedLibraryHandler & other);

+    SharedLibraryHandler & operator=(const SharedLibraryHandler & other) = delete;
+
    ~SharedLibraryHandler();

    BlockInputStreamPtr loadAll();
--- a/programs/server/Server.cpp
+++ b/programs/server/Server.cpp
@ -13,6 +13,7 @@
 #include <Poco/Net/HTTPServer.h>
 #include <Poco/Net/NetException.h>
 #include <Poco/Util/HelpFormatter.h>
+#include <Poco/Environment.h>
 #include <ext/scope_guard.h>
 #include <common/defines.h>
 #include <common/logger_useful.h>
@ -385,6 +386,11 @@ void Server::initialize(Poco::Util::Application & self)
 {
    BaseDaemon::initialize(self);
    logger().information("starting up");
+
+    LOG_INFO(&logger(), "OS Name = {}, OS Version = {}, OS Architecture = {}",
+        Poco::Environment::osName(),
+        Poco::Environment::osVersion(),
+        Poco::Environment::osArchitecture());
 }

 std::string Server::getDefaultCorePath() const
@ -879,7 +885,8 @@ int Server::main(const std::vector<std::string> & /*args*/)
        global_context->setMMappedFileCache(mmap_cache_size);

 #if USE_EMBEDDED_COMPILER
-    size_t compiled_expression_cache_size = config().getUInt64("compiled_expression_cache_size", 500);
+    constexpr size_t compiled_expression_cache_size_default = 1024 * 1024 * 1024;
+    size_t compiled_expression_cache_size = config().getUInt64("compiled_expression_cache_size", compiled_expression_cache_size_default);
    CompiledExpressionCacheFactory::instance().init(compiled_expression_cache_size);
 #endif

--- a/programs/server/config.xml
+++ b/programs/server/config.xml
@ -329,6 +329,8 @@
      -->
    <mmap_cache_size>1000</mmap_cache_size>

+    <!-- Cache size for compiled expressions.-->
+    <compiled_expression_cache_size>1073741824</compiled_expression_cache_size>

    <!-- Path to data directory, with trailing slash. -->
    <path>/var/lib/clickhouse/</path>
--- a/src/Access/DiskAccessStorage.cpp
+++ b/src/Access/DiskAccessStorage.cpp
@ -355,8 +355,9 @@ String DiskAccessStorage::getStorageParamsJSON() const
    std::lock_guard lock{mutex};
    Poco::JSON::Object json;
    json.set("path", directory_path);
-    if (readonly)
-        json.set("readonly", readonly.load());
+    bool readonly_loaded = readonly;
+    if (readonly_loaded)
+        json.set("readonly", Poco::Dynamic::Var{true});
    std::ostringstream oss;         // STYLE_CHECK_ALLOW_STD_STRING_STREAM
    oss.exceptions(std::ios::failbit);
    Poco::JSON::Stringifier::stringify(json, oss);
--- a/src/Access/ExternalAuthenticators.cpp
+++ b/src/Access/ExternalAuthenticators.cpp
@ -77,7 +77,7 @@ auto parseLDAPServer(const Poco::Util::AbstractConfiguration & config, const Str
        if (enable_tls_lc_str == "starttls")
            params.enable_tls = LDAPClient::Params::TLSEnable::YES_STARTTLS;
        else if (config.getBool(ldap_server_config + ".enable_tls"))
-            params.enable_tls = LDAPClient::Params::TLSEnable::YES;
+            params.enable_tls = LDAPClient::Params::TLSEnable::YES; //-V1048
        else
            params.enable_tls = LDAPClient::Params::TLSEnable::NO;
    }
@ -96,7 +96,7 @@ auto parseLDAPServer(const Poco::Util::AbstractConfiguration & config, const Str
        else if (tls_minimum_protocol_version_lc_str == "tls1.1")
            params.tls_minimum_protocol_version = LDAPClient::Params::TLSProtocolVersion::TLS1_1;
        else if (tls_minimum_protocol_version_lc_str == "tls1.2")
-            params.tls_minimum_protocol_version = LDAPClient::Params::TLSProtocolVersion::TLS1_2;
+            params.tls_minimum_protocol_version = LDAPClient::Params::TLSProtocolVersion::TLS1_2; //-V1048
        else
            throw Exception("Bad value for 'tls_minimum_protocol_version' entry, allowed values are: 'ssl2', 'ssl3', 'tls1.0', 'tls1.1', 'tls1.2'", ErrorCodes::BAD_ARGUMENTS);
    }
@ -113,7 +113,7 @@ auto parseLDAPServer(const Poco::Util::AbstractConfiguration & config, const Str
        else if (tls_require_cert_lc_str == "try")
            params.tls_require_cert = LDAPClient::Params::TLSRequireCert::TRY;
        else if (tls_require_cert_lc_str == "demand")
-            params.tls_require_cert = LDAPClient::Params::TLSRequireCert::DEMAND;
+            params.tls_require_cert = LDAPClient::Params::TLSRequireCert::DEMAND; //-V1048
        else
            throw Exception("Bad value for 'tls_require_cert' entry, allowed values are: 'never', 'allow', 'try', 'demand'", ErrorCodes::BAD_ARGUMENTS);
    }
--- a/src/Access/GrantedRoles.cpp
+++ b/src/Access/GrantedRoles.cpp
@ -136,7 +136,7 @@ GrantedRoles::Elements GrantedRoles::getElements() const
    boost::range::set_difference(roles, roles_with_admin_option, std::back_inserter(element.ids));
    if (!element.empty())
    {
-        element.admin_option = false;
+        element.admin_option = false; //-V1048
        elements.emplace_back(std::move(element));
    }

--- a/src/Access/Quota.h
+++ b/src/Access/Quota.h
@ -45,7 +45,7 @@ struct Quota : public IAccessEntity

    struct ResourceTypeInfo
    {
-        const char * const raw_name;
+        const char * const raw_name = "";
        const String name;    /// Lowercased with underscores, e.g. "result_rows".
        const String keyword; /// Uppercased with spaces, e.g. "RESULT ROWS".
        const bool output_as_float = false;
--- a/src/AggregateFunctions/AggregateFunctionBoundingRatio.h
+++ b/src/AggregateFunctions/AggregateFunctionBoundingRatio.h
@ -20,7 +20,7 @@ namespace ErrorCodes

 /** Tracks the leftmost and rightmost (x, y) data points.
  */
-struct AggregateFunctionBoundingRatioData
+struct AggregateFunctionBoundingRatioData //-V730
 {
    struct Point
    {
--- a/src/AggregateFunctions/AggregateFunctionHistogram.h
+++ b/src/AggregateFunctions/AggregateFunctionHistogram.h
@ -220,7 +220,7 @@ private:
    }

 public:
-    AggregateFunctionHistogramData()
+    AggregateFunctionHistogramData() //-V730
        : size(0)
        , lower_bound(std::numeric_limits<Mean>::max())
        , upper_bound(std::numeric_limits<Mean>::lowest())
--- a/src/AggregateFunctions/AggregateFunctionMinMaxAny.h
+++ b/src/AggregateFunctions/AggregateFunctionMinMaxAny.h
@ -181,7 +181,7 @@ public:
 /** For strings. Short strings are stored in the object itself, and long strings are allocated separately.
  * NOTE It could also be suitable for arrays of numbers.
  */
-struct SingleValueDataString
+struct SingleValueDataString //-V730
 {
 private:
    using Self = SingleValueDataString;
--- a/src/AggregateFunctions/AggregateFunctionStatistics.h
+++ b/src/AggregateFunctions/AggregateFunctionStatistics.h
@ -13,7 +13,7 @@
 namespace DB
 {

-namespace
+namespace detail
 {

 /// This function returns true if both values are large and comparable.
@ -72,7 +72,7 @@ public:
        Float64 factor = static_cast<Float64>(count * source.count) / total_count;
        Float64 delta = mean - source.mean;

-        if (areComparable(count, source.count))
+        if (detail::areComparable(count, source.count))
            mean = (source.count * source.mean + count * mean) / total_count;
        else
            mean = source.mean + delta * (static_cast<Float64>(count) / total_count);
@ -302,7 +302,7 @@ public:
        Float64 left_delta = left_mean - source.left_mean;
        Float64 right_delta = right_mean - source.right_mean;

-        if (areComparable(count, source.count))
+        if (detail::areComparable(count, source.count))
        {
            left_mean = (source.count * source.left_mean + count * left_mean) / total_count;
            right_mean = (source.count * source.right_mean + count * right_mean) / total_count;
--- a/src/AggregateFunctions/QuantileExact.h
+++ b/src/AggregateFunctions/QuantileExact.h
@ -263,7 +263,7 @@ struct QuantileExactLow : public QuantileExactBase<Value, QuantileExactLow<Value
        {
            // sort inputs in ascending order
            std::sort(array.begin(), array.end());
-            size_t n = level < 1 ? level * array.size() : (array.size() - 1);
+
            // if level is 0.5 then compute the "low" median of the sorted array
            // by the method of rounding.
            if (level == 0.5)
@ -278,10 +278,14 @@ struct QuantileExactLow : public QuantileExactBase<Value, QuantileExactLow<Value
                    return array[static_cast<size_t>((floor(s / 2)) - 1)];
                }
            }
-            // else quantile is the nth index of the sorted array obtained by multiplying
-            // level and size of array. Example if level = 0.1 and size of array is 10,
-            // then return array[1].
-            return array[n];
+            else
+            {
+                // else quantile is the nth index of the sorted array obtained by multiplying
+                // level and size of array. Example if level = 0.1 and size of array is 10,
+                // then return array[1].
+                size_t n = level < 1 ? level * array.size() : (array.size() - 1);
+                return array[n];
+            }
        }
        return std::numeric_limits<Value>::quiet_NaN();
    }
@ -295,7 +299,7 @@ struct QuantileExactLow : public QuantileExactBase<Value, QuantileExactLow<Value
            for (size_t i = 0; i < size; ++i)
            {
                auto level = levels[indices[i]];
-                size_t n = level < 1 ? level * array.size() : (array.size() - 1);
+
                // if level is 0.5 then compute the "low" median of the sorted array
                // by the method of rounding.
                if (level == 0.5)
@ -310,9 +314,13 @@ struct QuantileExactLow : public QuantileExactBase<Value, QuantileExactLow<Value
                        result[indices[i]] = array[static_cast<size_t>(floor((s / 2) - 1))];
                    }
                }
-                // else quantile is the nth index of the sorted array obtained by multiplying
-                // level and size of array. Example if level = 0.1 and size of array is 10.
-                result[indices[i]] = array[n];
+                else
+                {
+                    // else quantile is the nth index of the sorted array obtained by multiplying
+                    // level and size of array. Example if level = 0.1 and size of array is 10.
+                    size_t n = level < 1 ? level * array.size() : (array.size() - 1);
+                    result[indices[i]] = array[n];
+                }
            }
        }
        else
@ -337,7 +345,7 @@ struct QuantileExactHigh : public QuantileExactBase<Value, QuantileExactHigh<Val
        {
            // sort inputs in ascending order
            std::sort(array.begin(), array.end());
-            size_t n = level < 1 ? level * array.size() : (array.size() - 1);
+
            // if level is 0.5 then compute the "high" median of the sorted array
            // by the method of rounding.
            if (level == 0.5)
@ -345,9 +353,13 @@ struct QuantileExactHigh : public QuantileExactBase<Value, QuantileExactHigh<Val
                auto s = array.size();
                return array[static_cast<size_t>(floor(s / 2))];
            }
-            // else quantile is the nth index of the sorted array obtained by multiplying
-            // level and size of array. Example if level = 0.1 and size of array is 10.
-            return array[n];
+            else
+            {
+                // else quantile is the nth index of the sorted array obtained by multiplying
+                // level and size of array. Example if level = 0.1 and size of array is 10.
+                size_t n = level < 1 ? level * array.size() : (array.size() - 1);
+                return array[n];
+            }
        }
        return std::numeric_limits<Value>::quiet_NaN();
    }
@ -361,7 +373,7 @@ struct QuantileExactHigh : public QuantileExactBase<Value, QuantileExactHigh<Val
            for (size_t i = 0; i < size; ++i)
            {
                auto level = levels[indices[i]];
-                size_t n = level < 1 ? level * array.size() : (array.size() - 1);
+
                // if level is 0.5 then compute the "high" median of the sorted array
                // by the method of rounding.
                if (level == 0.5)
@ -369,9 +381,13 @@ struct QuantileExactHigh : public QuantileExactBase<Value, QuantileExactHigh<Val
                    auto s = array.size();
                    result[indices[i]] = array[static_cast<size_t>(floor(s / 2))];
                }
-                // else quantile is the nth index of the sorted array obtained by multiplying
-                // level and size of array. Example if level = 0.1 and size of array is 10.
-                result[indices[i]] = array[n];
+                else
+                {
+                    // else quantile is the nth index of the sorted array obtained by multiplying
+                    // level and size of array. Example if level = 0.1 and size of array is 10.
+                    size_t n = level < 1 ? level * array.size() : (array.size() - 1);
+                    result[indices[i]] = array[n];
+                }
            }
        }
        else
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@ -184,6 +184,7 @@ add_object_library(clickhouse_disks Disks)
 add_object_library(clickhouse_interpreters Interpreters)
 add_object_library(clickhouse_interpreters_mysql Interpreters/MySQL)
 add_object_library(clickhouse_interpreters_clusterproxy Interpreters/ClusterProxy)
+add_object_library(clickhouse_interpreters_jit Interpreters/JIT)
 add_object_library(clickhouse_columns Columns)
 add_object_library(clickhouse_storages Storages)
 add_object_library(clickhouse_storages_distributed Storages/Distributed)
--- a/src/Common/CompactArray.h
+++ b/src/Common/CompactArray.h
@ -159,12 +159,12 @@ private:
    /// The number of bytes read.
    size_t read_count = 0;
    /// The content in the current position.
-    UInt8 value_l;
-    UInt8 value_r;
+    UInt8 value_l = 0;
+    UInt8 value_r = 0;
    ///
    bool is_eof = false;
    /// Does the cell fully fit into one byte?
-    bool fits_in_byte;
+    bool fits_in_byte = false;
 };

 /** TODO This code looks very suboptimal.
--- a/src/Common/Dwarf.cpp
+++ b/src/Common/Dwarf.cpp
@ -804,7 +804,7 @@ bool Dwarf::findLocation(
        findSubProgramDieForAddress(cu, die, address, base_addr_cu, subprogram);

        // Subprogram is the DIE of caller function.
-        if (check_inline && subprogram.abbr.has_children)
+        if (/*check_inline &&*/ subprogram.abbr.has_children)
        {
            // Use an extra location and get its call file and call line, so that
            // they can be used for the second last location when we don't have
@ -832,7 +832,7 @@ bool Dwarf::findLocation(
                // file+line of the non-inlined outer function making the call.
                // locationInfo.name is already set by the caller by looking up the
                // non-inlined function @address belongs to.
-                info.has_file_and_line = true;
+                info.has_file_and_line = true; //-V1048
                info.file = call_locations[0].file;
                info.line = call_locations[0].line;

--- a/src/Common/Dwarf.h
+++ b/src/Common/Dwarf.h
@ -121,7 +121,7 @@ public:
    struct CallLocation
    {
        Path file = {};
-        uint64_t line;
+        uint64_t line = 0;
        std::string_view name;
    };

@ -202,8 +202,8 @@ private:
    // Abbreviation for a Debugging Information Entry.
    struct DIEAbbreviation
    {
-        uint64_t code;
-        uint64_t tag;
+        uint64_t code = 0;
+        uint64_t tag = 0;
        bool has_children = false;

        std::string_view attributes;
--- a/src/Common/ErrorCodes.h
+++ b/src/Common/ErrorCodes.h
@ -29,7 +29,7 @@ namespace ErrorCodes
    struct Error
    {
        /// Number of times Exception with this ErrorCode had been throw.
-        Value count;
+        Value count = 0;
        /// Time of the last error.
        UInt64 error_time_ms = 0;
        /// Message for the last error.
--- a/src/Common/HashTable/ClearableHashSet.h
+++ b/src/Common/HashTable/ClearableHashSet.h
@ -44,7 +44,7 @@ struct ClearableHashTableCell : public BaseCell
    /// Do I need to store the zero key separately (that is, can a zero key be inserted into the hash table).
    static constexpr bool need_zero_value_storage = false;

-    ClearableHashTableCell() {}
+    ClearableHashTableCell() {} //-V730
    ClearableHashTableCell(const Key & key_, const State & state) : BaseCell(key_, state), version(state.version) {}
 };

--- a/src/Common/HashTable/FixedClearableHashSet.h
+++ b/src/Common/HashTable/FixedClearableHashSet.h
@ -13,7 +13,7 @@ struct FixedClearableHashTableCell
    using mapped_type = VoidMapped;
    UInt32 version;

-    FixedClearableHashTableCell() {}
+    FixedClearableHashTableCell() {} //-V730
    FixedClearableHashTableCell(const Key &, const State & state) : version(state.version) {}

    const VoidKey getKey() const { return {}; }
--- a/src/Common/HashTable/FixedHashMap.h
+++ b/src/Common/HashTable/FixedHashMap.h
@ -16,7 +16,7 @@ struct FixedHashMapCell
    bool full;
    Mapped mapped;

-    FixedHashMapCell() {}
+    FixedHashMapCell() {} //-V730
    FixedHashMapCell(const Key &, const State &) : full(true) {}
    FixedHashMapCell(const value_type & value_, const State &) : full(true), mapped(value_.second) {}

@ -31,7 +31,7 @@ struct FixedHashMapCell
    ///  Note that we have to assemble a continuous layout for the value_type on each call of getValue().
    struct CellExt
    {
-        CellExt() {}
+        CellExt() {} //-V730
        CellExt(Key && key_, const FixedHashMapCell * ptr_) : key(key_), ptr(const_cast<FixedHashMapCell *>(ptr_)) {}
        void update(Key && key_, const FixedHashMapCell * ptr_)
        {
@ -76,7 +76,7 @@ struct FixedHashMapImplicitZeroCell
    ///  Note that we have to assemble a continuous layout for the value_type on each call of getValue().
    struct CellExt
    {
-        CellExt() {}
+        CellExt() {} //-V730
        CellExt(Key && key_, const FixedHashMapImplicitZeroCell * ptr_) : key(key_), ptr(const_cast<FixedHashMapImplicitZeroCell *>(ptr_)) {}
        void update(Key && key_, const FixedHashMapImplicitZeroCell * ptr_)
        {
--- a/src/Common/HashTable/FixedHashTable.h
+++ b/src/Common/HashTable/FixedHashTable.h
@ -19,7 +19,7 @@ struct FixedHashTableCell
    using mapped_type = VoidMapped;
    bool full;

-    FixedHashTableCell() {}
+    FixedHashTableCell() {} //-V730
    FixedHashTableCell(const Key &, const State &) : full(true) {}

    const VoidKey getKey() const { return {}; }
@ -267,7 +267,7 @@ public:
        DB::ReadBuffer & in;
        Cell cell;
        size_t read_count = 0;
-        size_t size;
+        size_t size = 0;
        bool is_eof = false;
        bool is_initialized = false;
    };
--- a/src/Common/HashTable/HashSet.h
+++ b/src/Common/HashTable/HashSet.h
@ -73,8 +73,8 @@ struct HashSetCellWithSavedHash : public HashTableCell<Key, Hash, TState>

    size_t saved_hash;

-    HashSetCellWithSavedHash() : Base() {}
-    HashSetCellWithSavedHash(const Key & key_, const typename Base::State & state) : Base(key_, state) {}
+    HashSetCellWithSavedHash() : Base() {} //-V730
+    HashSetCellWithSavedHash(const Key & key_, const typename Base::State & state) : Base(key_, state) {} //-V730

    bool keyEquals(const Key & key_) const { return bitEquals(this->key, key_); }
    bool keyEquals(const Key & key_, size_t hash_) const { return saved_hash == hash_ && bitEquals(this->key, key_); }
--- a/src/Common/HashTable/HashTable.h
+++ b/src/Common/HashTable/HashTable.h
@ -305,7 +305,7 @@ template <bool need_zero_value_storage, typename Cell>
 struct ZeroValueStorage;

 template <typename Cell>
-struct ZeroValueStorage<true, Cell>
+struct ZeroValueStorage<true, Cell> //-V730
 {
 private:
    bool has_zero = false;
--- a/src/Common/HashTable/SmallTable.h
+++ b/src/Common/HashTable/SmallTable.h
@ -80,7 +80,7 @@ public:
    {
    public:
        Reader(DB::ReadBuffer & in_)
-        : in(in_)
+            : in(in_)
        {
        }

@ -124,15 +124,15 @@ public:
        DB::ReadBuffer & in;
        Cell cell;
        size_t read_count = 0;
-        size_t size;
+        size_t size = 0;
        bool is_eof = false;
        bool is_initialized = false;
    };

    class iterator
    {
-        Self * container;
-        Cell * ptr;
+        Self * container = nullptr;
+        Cell * ptr = nullptr;

        friend class SmallTable;

@ -158,8 +158,8 @@ public:

    class const_iterator
    {
-        const Self * container;
-        const Cell * ptr;
+        const Self * container = nullptr;
+        const Cell * ptr = nullptr;

        friend class SmallTable;

@ -184,16 +184,16 @@ public:
    };


-    const_iterator begin() const     { return iteratorTo(buf); }
-    iterator begin()                 { return iteratorTo(buf); }
+    const_iterator begin() const { return iteratorTo(buf); }
+    iterator begin()             { return iteratorTo(buf); }

-    const_iterator end() const         { return iteratorTo(buf + m_size); }
-    iterator end()                     { return iteratorTo(buf + m_size); }
+    const_iterator end() const   { return iteratorTo(buf + m_size); }
+    iterator end()               { return iteratorTo(buf + m_size); }


 protected:
-    const_iterator iteratorTo(const Cell * ptr) const     { return const_iterator(this, ptr); }
-    iterator iteratorTo(Cell * ptr)                     { return iterator(this, ptr); }
+    const_iterator iteratorTo(const Cell * ptr) const { return const_iterator(this, ptr); }
+    iterator iteratorTo(Cell * ptr)                   { return iterator(this, ptr); }


 public:
--- a/src/Common/HashTable/StringHashTable.h
+++ b/src/Common/HashTable/StringHashTable.h
@ -79,7 +79,7 @@ struct StringHashTableHash
 };

 template <typename Cell>
-struct StringHashTableEmpty
+struct StringHashTableEmpty //-V730
 {
    using Self = StringHashTableEmpty;

--- a/src/Common/HashTable/TwoLevelHashTable.h
+++ b/src/Common/HashTable/TwoLevelHashTable.h
@ -119,9 +119,9 @@ public:

    class iterator
    {
-        Self * container;
-        size_t bucket;
-        typename Impl::iterator current_it;
+        Self * container{};
+        size_t bucket{};
+        typename Impl::iterator current_it{};

        friend class TwoLevelHashTable;

@ -156,9 +156,9 @@ public:

    class const_iterator
    {
-        Self * container;
-        size_t bucket;
-        typename Impl::const_iterator current_it;
+        Self * container{};
+        size_t bucket{};
+        typename Impl::const_iterator current_it{};

        friend class TwoLevelHashTable;

--- a/src/Common/HyperLogLogCounter.h
+++ b/src/Common/HyperLogLogCounter.h
@ -80,10 +80,7 @@ template <UInt64 MaxValue> struct MinCounterType
 /// Denominator of expression for HyperLogLog algorithm.
 template <UInt8 precision, int max_rank, typename HashValueType, typename DenominatorType,
    DenominatorMode denominator_mode, typename Enable = void>
-class __attribute__ ((packed)) Denominator;
-
-namespace
-{
+class Denominator;

 /// Returns true if rank storage is big.
 constexpr bool isBigRankStore(UInt8 precision)
@ -91,8 +88,6 @@ constexpr bool isBigRankStore(UInt8 precision)
    return precision >= 12;
 }

-}
-
 /// Used to deduce denominator type depending on options provided.
 template <typename HashValueType, typename DenominatorType, DenominatorMode denominator_mode, typename Enable = void>
 struct IntermediateDenominator;
@ -120,7 +115,7 @@ struct IntermediateDenominator<HashValueType, DenominatorType, DenominatorMode::
 /// Satisfiable when rank storage is small enough.
 template <UInt8 precision, int max_rank, typename HashValueType, typename DenominatorType,
    DenominatorMode denominator_mode>
-class __attribute__ ((packed)) Denominator<precision, max_rank, HashValueType, DenominatorType,
+class __attribute__((__packed__)) Denominator<precision, max_rank, HashValueType, DenominatorType,
    denominator_mode,
    std::enable_if_t<!details::isBigRankStore(precision) || !(denominator_mode == DenominatorMode::StableIfBig)>>
 {
@ -164,7 +159,7 @@ private:
 /// Used when rank storage is big.
 template <UInt8 precision, int max_rank, typename HashValueType, typename DenominatorType,
    DenominatorMode denominator_mode>
-class __attribute__ ((packed)) Denominator<precision, max_rank, HashValueType, DenominatorType,
+class __attribute__((__packed__)) Denominator<precision, max_rank, HashValueType, DenominatorType,
    denominator_mode,
    std::enable_if_t<details::isBigRankStore(precision) && denominator_mode == DenominatorMode::StableIfBig>>
 {
@ -252,6 +247,7 @@ struct RankWidth<UInt64>

 }

+
 /// Sets behavior of HyperLogLog class.
 enum class HyperLogLogMode
 {
--- a/src/Common/LRUCache.h
+++ b/src/Common/LRUCache.h
@ -145,6 +145,11 @@ public:
        return cells.size();
    }

+    size_t maxSize() const
+    {
+        return max_size;
+    }
+
    void reset()
    {
        std::lock_guard lock(mutex);
--- a/src/Common/MemoryTracker.h
+++ b/src/Common/MemoryTracker.h
@ -208,7 +208,7 @@ public:

        static bool isBlocked(VariableContext current_level, bool fault_injection)
        {
-            return counter > 0 && current_level >= level && (!fault_injection || (fault_injection && block_fault_injections));
+            return counter > 0 && current_level >= level && (!fault_injection || block_fault_injections);
        }
    };
 };
--- a/src/Common/PoolWithFailoverBase.h
+++ b/src/Common/PoolWithFailoverBase.h
@ -388,7 +388,7 @@ void PoolWithFailoverBase<TNestedPool>::updateErrorCounts(PoolWithFailoverBase<T
 {
    time_t current_time = time(nullptr);

-    if (last_decrease_time)
+    if (last_decrease_time) //-V1051
    {
        time_t delta = current_time - last_decrease_time;

--- a/src/Common/SharedBlockRowRef.h
+++ b/src/Common/SharedBlockRowRef.h
@ -44,7 +44,7 @@ using SharedBlockPtr = boost::intrusive_ptr<detail::SharedBlock>;
 struct SharedBlockRowRef
 {
    ColumnRawPtrs * columns = nullptr;
-    size_t row_num;
+    size_t row_num = 0;
    SharedBlockPtr shared_block;

    void swap(SharedBlockRowRef & other)
--- a/src/Common/ThreadStatus.h
+++ b/src/Common/ThreadStatus.h
@ -71,7 +71,7 @@ public:
    LogsLevel client_logs_level = LogsLevel::none;

    String query;
-    UInt64 normalized_query_hash;
+    UInt64 normalized_query_hash = 0;
 };

 using ThreadGroupStatusPtr = std::shared_ptr<ThreadGroupStatus>;
--- a/src/Common/Volnitsky.h
+++ b/src/Common/Volnitsky.h
@ -303,7 +303,7 @@ namespace VolnitskyTraits
                    {
                        /// ngram for Ul
                        chars.c0 = c0u;
-                        chars.c1 = c1l;
+                        chars.c1 = c1l; //-V1048
                        putNGramBase(n, offset);
                    }

--- a/src/Common/ZooKeeper/TestKeeper.cpp
+++ b/src/Common/ZooKeeper/TestKeeper.cpp
@ -198,7 +198,7 @@ std::pair<ResponsePtr, Undo> TestKeeperCreateRequest::process(TestKeeper::Contai
        else
        {
            TestKeeper::Node created_node;
-            created_node.seq_num = 0;
+            created_node.seq_num = 0; //-V1048
            created_node.stat.czxid = zxid;
            created_node.stat.mzxid = zxid;
            created_node.stat.ctime = std::chrono::system_clock::now().time_since_epoch() / std::chrono::milliseconds(1);
@ -271,7 +271,7 @@ std::pair<ResponsePtr, Undo> TestKeeperRemoveRequest::process(TestKeeper::Contai
        auto & parent = container.at(parentPath(path));
        --parent.stat.numChildren;
        ++parent.stat.cversion;
-        response.error = Error::ZOK;
+        response.error = Error::ZOK; //-V1048

        undo = [prev_node, &container, path = path]
        {
@ -293,7 +293,7 @@ std::pair<ResponsePtr, Undo> TestKeeperExistsRequest::process(TestKeeper::Contai
    if (it != container.end())
    {
        response.stat = it->second.stat;
-        response.error = Error::ZOK;
+        response.error = Error::ZOK; //-V1048
    }
    else
    {
@ -316,7 +316,7 @@ std::pair<ResponsePtr, Undo> TestKeeperGetRequest::process(TestKeeper::Container
    {
        response.stat = it->second.stat;
        response.data = it->second.data;
-        response.error = Error::ZOK;
+        response.error = Error::ZOK; //-V1048
    }

    return { std::make_shared<GetResponse>(response), {} };
@ -343,7 +343,7 @@ std::pair<ResponsePtr, Undo> TestKeeperSetRequest::process(TestKeeper::Container
        it->second.data = data;
        ++container.at(parentPath(path)).stat.cversion;
        response.stat = it->second.stat;
-        response.error = Error::ZOK;
+        response.error = Error::ZOK; //-V1048

        undo = [prev_node, &container, path = path]
        {
@ -387,7 +387,7 @@ std::pair<ResponsePtr, Undo> TestKeeperListRequest::process(TestKeeper::Containe
        }

        response.stat = it->second.stat;
-        response.error = Error::ZOK;
+        response.error = Error::ZOK; //-V1048
    }

    return { std::make_shared<ListResponse>(response), {} };
@ -407,7 +407,7 @@ std::pair<ResponsePtr, Undo> TestKeeperCheckRequest::process(TestKeeper::Contain
    }
    else
    {
-        response.error = Error::ZOK;
+        response.error = Error::ZOK; //-V1048
    }

    return { std::make_shared<CheckResponse>(response), {} };
@ -422,7 +422,7 @@ std::pair<ResponsePtr, Undo> TestKeeperMultiRequest::process(TestKeeper::Contain
    try
    {
        auto request_it = requests.begin();
-        response.error = Error::ZOK;
+        response.error = Error::ZOK; //-V1048
        while (request_it != requests.end())
        {
            const TestKeeperRequest & concrete_request = dynamic_cast<const TestKeeperRequest &>(**request_it);
--- a/src/Common/ZooKeeper/ZooKeeperCommon.h
+++ b/src/Common/ZooKeeper/ZooKeeperCommon.h
@ -25,7 +25,7 @@ namespace Coordination
 struct ZooKeeperResponse : virtual Response
 {
    XID xid = 0;
-    int64_t zxid;
+    int64_t zxid = 0;

    virtual ~ZooKeeperResponse() override = default;
    virtual void readImpl(ReadBuffer &) = 0;
--- a/src/Common/filesystemHelpers.cpp
+++ b/src/Common/filesystemHelpers.cpp
@ -79,7 +79,6 @@ std::filesystem::path getMountPoint(std::filesystem::path absolute_path)
        if (device_id != parent_device_id)
            return absolute_path;
        absolute_path = parent;
-        device_id = parent_device_id;
    }

    return absolute_path;
--- a/src/Compression/tests/gtest_compressionCodec.cpp
+++ b/src/Compression/tests/gtest_compressionCodec.cpp
@ -35,29 +35,6 @@

 using namespace DB;

-namespace std
-{
-template <typename T>
-std::ostream & operator<<(std::ostream & ostr, const std::optional<T> & opt)
-{
-    if (!opt)
-    {
-        return ostr << "<empty optional>";
-    }
-
-    return ostr << *opt;
-}
-
-template <typename T>
-std::vector<T> operator+(std::vector<T> && left, std::vector<T> && right)
-{
-    std::vector<T> result(std::move(left));
-    std::move(std::begin(right), std::end(right), std::back_inserter(result));
-
-    return result;
-}
-
-}

 namespace
 {
@ -337,6 +314,14 @@ CodecTestSequence operator+(CodecTestSequence && left, const CodecTestSequence &
    return left.append(right);
 }

+std::vector<CodecTestSequence> operator+(const std::vector<CodecTestSequence> & left, const std::vector<CodecTestSequence> & right)
+{
+    std::vector<CodecTestSequence> result(std::move(left));
+    std::move(std::begin(right), std::end(right), std::back_inserter(result));
+
+    return result;
+}
+
 template <typename T>
 CodecTestSequence operator*(CodecTestSequence && left, T times)
 {
@ -362,7 +347,7 @@ std::ostream & operator<<(std::ostream & ostr, const Codec & codec)
 {
    return ostr << "Codec{"
                << "name: " << codec.codec_statement
-                << ", expected_compression_ratio: " << codec.expected_compression_ratio
+                << ", expected_compression_ratio: " << *codec.expected_compression_ratio
                << "}";
 }

@ -775,15 +760,13 @@ auto FFand0Generator = []()
    return [step = 0](auto i) mutable
    {
        decltype(i) result;
-        if (step++ % 2 == 0)
-        {
-            memset(&result, 0, sizeof(result));
-        }
-        else
-        {
-            memset(&result, 0xFF, sizeof(result));
-        }

+        if (step % 2 == 0)
+            memset(&result, 0, sizeof(result));
+        else
+            memset(&result, 0xFF, sizeof(result));
+
+        ++step;
        return result;
    };
 };
@ -1129,7 +1112,7 @@ template <typename ValueType>
 auto DDCompatibilityTestSequence()
 {
    // Generates sequences with double delta in given range.
-    auto dd_generator = [prev_delta = static_cast<Int64>(0), prev = static_cast<Int64>(0)](auto dd) mutable
+    auto dd_generator = [prev_delta = static_cast<Int64>(0), prev = static_cast<Int64>(0)](auto dd) mutable //-V788
    {
        const auto curr = dd + prev + prev_delta;
        prev = curr;
--- a/src/Coordination/Changelog.h
+++ b/src/Coordination/Changelog.h
@ -30,10 +30,10 @@ static constexpr auto CURRENT_CHANGELOG_VERSION = ChangelogVersion::V0;
 struct ChangelogRecordHeader
 {
    ChangelogVersion version = CURRENT_CHANGELOG_VERSION;
-    uint64_t index; /// entry log number
-    uint64_t term;
-    nuraft::log_val_type value_type;
-    uint64_t blob_size;
+    uint64_t index = 0; /// entry log number
+    uint64_t term = 0;
+    nuraft::log_val_type value_type{};
+    uint64_t blob_size = 0;
 };

 /// Changelog record on disk
--- a/src/Coordination/KeeperStorage.cpp
+++ b/src/Coordination/KeeperStorage.cpp
@ -103,7 +103,8 @@ struct KeeperStorageSyncRequest final : public KeeperStorageRequest
    std::pair<Coordination::ZooKeeperResponsePtr, Undo> process(KeeperStorage::Container & /* container */, KeeperStorage::Ephemerals & /* ephemerals */, int64_t /* zxid */, int64_t /* session_id */) const override
    {
        auto response = zk_request->makeResponse();
-        dynamic_cast<Coordination::ZooKeeperSyncResponse *>(response.get())->path = dynamic_cast<Coordination::ZooKeeperSyncRequest *>(zk_request.get())->path;
+        dynamic_cast<Coordination::ZooKeeperSyncResponse &>(*response).path
+            = dynamic_cast<Coordination::ZooKeeperSyncRequest &>(*zk_request).path;
        return {response, {}};
    }
 };
--- a/src/Coordination/tests/gtest_for_build.cpp
+++ b/src/Coordination/tests/gtest_for_build.cpp
@ -64,7 +64,7 @@ TEST(CoordinationTest, BufferSerde)
 {
    Coordination::ZooKeeperRequestPtr request = Coordination::ZooKeeperRequestFactory::instance().get(Coordination::OpNum::Get);
    request->xid = 3;
-    dynamic_cast<Coordination::ZooKeeperGetRequest *>(request.get())->path = "/path/value";
+    dynamic_cast<Coordination::ZooKeeperGetRequest &>(*request).path = "/path/value";

    DB::WriteBufferFromNuraftBuffer wbuf;
    request->write(wbuf);
@ -90,7 +90,7 @@ TEST(CoordinationTest, BufferSerde)

    EXPECT_EQ(request_read->getOpNum(), Coordination::OpNum::Get);
    EXPECT_EQ(request_read->xid, 3);
-    EXPECT_EQ(dynamic_cast<Coordination::ZooKeeperGetRequest *>(request_read.get())->path, "/path/value");
+    EXPECT_EQ(dynamic_cast<Coordination::ZooKeeperGetRequest &>(*request_read).path, "/path/value");
 }

 template <typename StateMachine>
--- a/src/Core/MySQL/MySQLReplication.cpp
+++ b/src/Core/MySQL/MySQLReplication.cpp
@ -474,19 +474,19 @@ namespace MySQLReplication
                    }
                    case MYSQL_TYPE_NEWDECIMAL:
                    {
-                        const auto & dispatch = [](const size_t & precision, const size_t & scale, const auto & function) -> Field
+                        const auto & dispatch = [](size_t precision, size_t scale, const auto & function) -> Field
                        {
                            if (precision <= DecimalUtils::max_precision<Decimal32>)
                                return Field(function(precision, scale, Decimal32()));
-                            else if (precision <= DecimalUtils::max_precision<Decimal64>)
+                            else if (precision <= DecimalUtils::max_precision<Decimal64>) //-V547
                                return Field(function(precision, scale, Decimal64()));
-                            else if (precision <= DecimalUtils::max_precision<Decimal128>)
+                            else if (precision <= DecimalUtils::max_precision<Decimal128>) //-V547
                                return Field(function(precision, scale, Decimal128()));

                            return Field(function(precision, scale, Decimal256()));
                        };

-                        const auto & read_decimal = [&](const size_t & precision, const size_t & scale, auto decimal)
+                        const auto & read_decimal = [&](size_t precision, size_t scale, auto decimal)
                        {
                            using DecimalType = decltype(decimal);
                            static constexpr size_t digits_per_integer = 9;
@ -543,7 +543,7 @@ namespace MySQLReplication
                                    UInt32 val = 0;
                                    size_t to_read = compressed_bytes_map[compressed_decimals];

-                                    if (to_read)
+                                    if (to_read) //-V547
                                    {
                                        readBigEndianStrict(payload, reinterpret_cast<char *>(&val), to_read);
                                        res *= intExp10OfSize<DecimalType>(compressed_decimals);
--- a/src/Core/PostgreSQLProtocol.h
+++ b/src/Core/PostgreSQLProtocol.h
@ -257,6 +257,7 @@ class FirstMessage : public FrontMessage
 {
 public:
    Int32 payload_size;
+
    FirstMessage() = delete;
    FirstMessage(int payload_size_) : payload_size(payload_size_) {}
 };
@ -264,8 +265,9 @@ public:
 class CancelRequest : public FirstMessage
 {
 public:
-    Int32 process_id;
-    Int32 secret_key;
+    Int32 process_id = 0;
+    Int32 secret_key = 0;
+
    CancelRequest(int payload_size_) : FirstMessage(payload_size_) {}

    void deserialize(ReadBuffer & in) override
--- a/src/Core/Settings.h
+++ b/src/Core/Settings.h
@ -101,7 +101,7 @@ class IColumn;
    M(Float, totals_auto_threshold, 0.5, "The threshold for totals_mode = 'auto'.", 0) \
    \
    M(Bool, allow_suspicious_low_cardinality_types, false, "In CREATE TABLE statement allows specifying LowCardinality modifier for types of small fixed size (8 or less). Enabling this may increase merge times and memory consumption.", 0) \
-    M(Bool, compile_expressions, false, "Compile some scalar functions and operators to native code.", 0) \
+    M(Bool, compile_expressions, true, "Compile some scalar functions and operators to native code.", 0) \
    M(UInt64, min_count_to_compile_expression, 3, "The number of identical expressions before they are JIT-compiled", 0) \
    M(UInt64, group_by_two_level_threshold, 100000, "From what number of keys, a two-level aggregation starts. 0 - the threshold is not set.", 0) \
    M(UInt64, group_by_two_level_threshold_bytes, 100000000, "From what size of the aggregation state in bytes, a two-level aggregation begins to be used. 0 - the threshold is not set. Two-level aggregation is used when at least one of the thresholds is triggered.", 0) \
--- a/src/Core/SettingsQuirks.cpp
+++ b/src/Core/SettingsQuirks.cpp
@ -4,9 +4,7 @@

 #ifdef __linux__
 #include <linux/version.h>
-#endif

-#ifdef __linux__
 /// Detect does epoll_wait with nested epoll fds works correctly.
 /// Polling nested epoll fds from epoll_wait is required for async_socket_for_remote and use_hedged_requests.
 ///
@ -16,21 +14,15 @@
 ///   [2]: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0c54a6a44bf3
 bool nestedEpollWorks(Poco::Logger * log)
 {
-    bool nested_epoll_works =
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(5, 5, 0)) && (LINUX_VERSION_CODE < KERNEL_VERSION(5, 6, 13))
        /// the check is correct since there will be no more 5.5.x releases.
-        false
-#else
-        true
-#endif
-    ;
-
-    if (!nested_epoll_works)
-    {
        if (log)
            LOG_WARNING(log, "Nested epoll_wait has some issues on kernels [5.5.0, 5.6.13). You should upgrade it to avoid possible issues.");
-    }
-    return nested_epoll_works;
+        return false;
+#else
+        (void)log;
+        return true;
+#endif
 }
 #else
 bool nestedEpollWorks(Poco::Logger *) { return true; }
--- a/src/Core/SortCursor.h
+++ b/src/Core/SortCursor.h
@ -126,7 +126,7 @@ struct SortCursorImpl

 /// Prevent using pos instead of getRow()
 private:
-    size_t pos;
+    size_t pos = 0;
 };

 using SortCursorImpls = std::vector<SortCursorImpl>;
--- a/src/DataStreams/IBlockInputStream.h
+++ b/src/DataStreams/IBlockInputStream.h
@ -158,7 +158,7 @@ public:

    /** Set the approximate total number of rows to read.
      */
-    virtual void addTotalRowsApprox(size_t value) { total_rows_approx += value; }
+    void addTotalRowsApprox(size_t value) { total_rows_approx += value; }


    /** Ask to abort the receipt of data as soon as possible.
--- a/src/DataStreams/NativeBlockOutputStream.cpp
+++ b/src/DataStreams/NativeBlockOutputStream.cpp
@ -51,7 +51,7 @@ static void writeData(const IDataType & type, const ColumnPtr & column, WriteBuf
    ISerialization::SerializeBinaryBulkSettings settings;
    settings.getter = [&ostr](ISerialization::SubstreamPath) -> WriteBuffer * { return &ostr; };
    settings.position_independent_encoding = false;
-    settings.low_cardinality_max_dictionary_size = 0;
+    settings.low_cardinality_max_dictionary_size = 0; //-V1048

    auto serialization = type.getDefaultSerialization();

--- a/src/DataStreams/PostgreSQLBlockInputStream.cpp
+++ b/src/DataStreams/PostgreSQLBlockInputStream.cpp
@ -210,7 +210,8 @@ void PostgreSQLBlockInputStream::insertValue(IColumn & column, std::string_view
                {
                    max_dimension = std::max(max_dimension, dimension);

-                    if (--dimension == 0)
+                    --dimension;
+                    if (dimension == 0)
                        break;

                    dimensions[dimension].emplace_back(Array(dimensions[dimension + 1].begin(), dimensions[dimension + 1].end()));
--- a/src/DataStreams/PushingToViewsBlockOutputStream.cpp
+++ b/src/DataStreams/PushingToViewsBlockOutputStream.cpp
@ -63,7 +63,7 @@ PushingToViewsBlockOutputStream::PushingToViewsBlockOutputStream(

        // Do not deduplicate insertions into MV if the main insertion is Ok
        if (disable_deduplication_for_children)
-            insert_context->setSetting("insert_deduplicate", false);
+            insert_context->setSetting("insert_deduplicate", Field{false});

        // Separate min_insert_block_size_rows/min_insert_block_size_bytes for children
        if (insert_settings.min_insert_block_size_rows_for_materialized_views)
--- a/src/DataTypes/Native.h
+++ b/src/DataTypes/Native.h
@ -5,15 +5,13 @@
 #endif

 #if USE_EMBEDDED_COMPILER
-#    include <DataTypes/DataTypeDate.h>
-#    include <DataTypes/DataTypeDateTime.h>
-#    include <DataTypes/DataTypeFixedString.h>
-#    include <DataTypes/DataTypeInterval.h>
-#    include <DataTypes/DataTypeNullable.h>
-#    include <DataTypes/DataTypeUUID.h>
-#    include <DataTypes/DataTypesNumber.h>
-#    include <Common/typeid_cast.h>
+#    include <Common/Exception.h>

+#    include <DataTypes/IDataType.h>
+#    include <DataTypes/DataTypeNullable.h>
+#    include <DataTypes/DataTypeFixedString.h>
+#    include <Columns/ColumnConst.h>
+#    include <Columns/ColumnNullable.h>
 #    pragma GCC diagnostic push
 #    pragma GCC diagnostic ignored "-Wunused-parameter"

@ -29,60 +27,56 @@ namespace ErrorCodes
    extern const int NOT_IMPLEMENTED;
 }

-template <typename... Ts>
-static inline bool typeIsEither(const IDataType & type)
-{
-    return (typeid_cast<const Ts *>(&type) || ...);
-}
-
 static inline bool typeIsSigned(const IDataType & type)
 {
-    return typeIsEither<
-        DataTypeInt8, DataTypeInt16, DataTypeInt32, DataTypeInt64,
-        DataTypeFloat32, DataTypeFloat64, DataTypeInterval
-    >(type);
+    WhichDataType data_type(type);
+    return data_type.isNativeInt() || data_type.isFloat();
 }

 static inline llvm::Type * toNativeType(llvm::IRBuilderBase & builder, const IDataType & type)
 {
-    if (auto * nullable = typeid_cast<const DataTypeNullable *>(&type))
+    WhichDataType data_type(type);
+
+    if (data_type.isNullable())
    {
-        auto * wrapped = toNativeType(builder, *nullable->getNestedType());
+        const auto & data_type_nullable = static_cast<const DataTypeNullable&>(type);
+        auto * wrapped = toNativeType(builder, *data_type_nullable.getNestedType());
        return wrapped ? llvm::StructType::get(wrapped, /* is null = */ builder.getInt1Ty()) : nullptr;
    }
+
    /// LLVM doesn't have unsigned types, it has unsigned instructions.
-    if (typeIsEither<DataTypeInt8, DataTypeUInt8>(type))
+    if (data_type.isInt8() || data_type.isUInt8())
        return builder.getInt8Ty();
-    if (typeIsEither<DataTypeInt16, DataTypeUInt16, DataTypeDate>(type))
+    else if (data_type.isInt16() || data_type.isUInt16() || data_type.isDate())
        return builder.getInt16Ty();
-    if (typeIsEither<DataTypeInt32, DataTypeUInt32, DataTypeDateTime>(type))
+    else if (data_type.isInt32() || data_type.isUInt32() || data_type.isDateTime())
        return builder.getInt32Ty();
-    if (typeIsEither<DataTypeInt64, DataTypeUInt64, DataTypeInterval>(type))
+    else if (data_type.isInt64() || data_type.isUInt64())
        return builder.getInt64Ty();
-    if (typeIsEither<DataTypeUUID>(type))
-        return builder.getInt128Ty();
-    if (typeIsEither<DataTypeFloat32>(type))
+    else if (data_type.isFloat32())
        return builder.getFloatTy();
-    if (typeIsEither<DataTypeFloat64>(type))
+    else if (data_type.isFloat64())
        return builder.getDoubleTy();
-    if (auto * fixed_string = typeid_cast<const DataTypeFixedString *>(&type))
-        return llvm::VectorType::get(builder.getInt8Ty(), fixed_string->getN());
+    else if (data_type.isFixedString())
+    {
+        const auto & data_type_fixed_string = static_cast<const DataTypeFixedString &>(type);
+        return llvm::VectorType::get(builder.getInt8Ty(), data_type_fixed_string.getN());
+    }
+
    return nullptr;
 }

 static inline bool canBeNativeType(const IDataType & type)
 {
-    if (auto * nullable = typeid_cast<const DataTypeNullable *>(&type))
-        return canBeNativeType(*nullable->getNestedType());
+    WhichDataType data_type(type);

-    return typeIsEither<DataTypeInt8, DataTypeUInt8>(type)
-        || typeIsEither<DataTypeInt16, DataTypeUInt16, DataTypeDate>(type)
-        || typeIsEither<DataTypeInt32, DataTypeUInt32, DataTypeDateTime>(type)
-        || typeIsEither<DataTypeInt64, DataTypeUInt64, DataTypeInterval>(type)
-        || typeIsEither<DataTypeUUID>(type)
-        || typeIsEither<DataTypeFloat32>(type)
-        || typeIsEither<DataTypeFloat64>(type)
-        || typeid_cast<const DataTypeFixedString *>(&type);
+    if (data_type.isNullable())
+    {
+        const auto & data_type_nullable = static_cast<const DataTypeNullable&>(type);
+        return canBeNativeType(*data_type_nullable.getNestedType());
+    }
+
+    return data_type.isNativeInt() || data_type.isNativeUInt() || data_type.isFloat() || data_type.isFixedString() || data_type.isDate();
 }

 static inline llvm::Type * toNativeType(llvm::IRBuilderBase & builder, const DataTypePtr & type)
@ -102,45 +96,98 @@ static inline llvm::Value * nativeBoolCast(llvm::IRBuilder<> & b, const DataType
        return b.CreateICmpNE(value, zero);
    if (value->getType()->isFloatingPointTy())
        return b.CreateFCmpONE(value, zero); /// QNaN is false
-    throw Exception("Cannot cast non-number " + from->getName() + " to bool", ErrorCodes::NOT_IMPLEMENTED);
+
+    throw Exception(ErrorCodes::NOT_IMPLEMENTED, "Cannot cast non-number {} to bool", from->getName());
 }

 static inline llvm::Value * nativeCast(llvm::IRBuilder<> & b, const DataTypePtr & from, llvm::Value * value, llvm::Type * to)
 {
    auto * n_from = value->getType();
+
    if (n_from == to)
        return value;
-    if (n_from->isIntegerTy() && to->isFloatingPointTy())
+    else if (n_from->isIntegerTy() && to->isFloatingPointTy())
        return typeIsSigned(*from) ? b.CreateSIToFP(value, to) : b.CreateUIToFP(value, to);
-    if (n_from->isFloatingPointTy() && to->isIntegerTy())
+    else if (n_from->isFloatingPointTy() && to->isIntegerTy())
        return typeIsSigned(*from) ? b.CreateFPToSI(value, to) : b.CreateFPToUI(value, to);
-    if (n_from->isIntegerTy() && to->isIntegerTy())
+    else if (n_from->isIntegerTy() && to->isIntegerTy())
        return b.CreateIntCast(value, to, typeIsSigned(*from));
-    if (n_from->isFloatingPointTy() && to->isFloatingPointTy())
+    else if (n_from->isFloatingPointTy() && to->isFloatingPointTy())
        return b.CreateFPCast(value, to);
-    throw Exception("Cannot cast " + from->getName() + " to requested type", ErrorCodes::NOT_IMPLEMENTED);
+
+    throw Exception(ErrorCodes::NOT_IMPLEMENTED, "Cannot cast {} to requested type", from->getName());
 }

 static inline llvm::Value * nativeCast(llvm::IRBuilder<> & b, const DataTypePtr & from, llvm::Value * value, const DataTypePtr & to)
 {
    auto * n_to = toNativeType(b, to);
+
    if (value->getType() == n_to)
+    {
        return value;
-    if (from->isNullable() && to->isNullable())
+    }
+    else if (from->isNullable() && to->isNullable())
    {
        auto * inner = nativeCast(b, removeNullable(from), b.CreateExtractValue(value, {0}), to);
        return b.CreateInsertValue(inner, b.CreateExtractValue(value, {1}), {1});
    }
-    if (from->isNullable())
+    else if (from->isNullable())
+    {
        return nativeCast(b, removeNullable(from), b.CreateExtractValue(value, {0}), to);
-    if (to->isNullable())
+    }
+    else if (to->isNullable())
    {
        auto * inner = nativeCast(b, from, value, removeNullable(to));
        return b.CreateInsertValue(llvm::Constant::getNullValue(n_to), inner, {0});
    }
+
    return nativeCast(b, from, value, n_to);
 }

+static inline llvm::Constant * getColumnNativeValue(llvm::IRBuilderBase & builder, const DataTypePtr & column_type, const IColumn & column, size_t index)
+{
+    if (const auto * constant = typeid_cast<const ColumnConst *>(&column))
+    {
+        return getColumnNativeValue(builder, column_type, constant->getDataColumn(), 0);
+    }
+
+    WhichDataType column_data_type(column_type);
+
+    auto * type = toNativeType(builder, column_type);
+
+    if (!type || column.size() <= index)
+        return nullptr;
+
+    if (column_data_type.isNullable())
+    {
+        const auto & nullable_data_type = assert_cast<const DataTypeNullable &>(*column_type);
+        const auto & nullable_column = assert_cast<const ColumnNullable &>(column);
+
+        auto * value = getColumnNativeValue(builder, nullable_data_type.getNestedType(), nullable_column.getNestedColumn(), index);
+        auto * is_null = llvm::ConstantInt::get(type->getContainedType(1), nullable_column.isNullAt(index));
+
+        return value ? llvm::ConstantStruct::get(static_cast<llvm::StructType *>(type), value, is_null) : nullptr;
+    }
+    else if (column_data_type.isFloat32())
+    {
+        return llvm::ConstantFP::get(type, assert_cast<const ColumnVector<Float32> &>(column).getElement(index));
+    }
+    else if (column_data_type.isFloat64())
+    {
+        return llvm::ConstantFP::get(type, assert_cast<const ColumnVector<Float64> &>(column).getElement(index));
+    }
+    else if (column_data_type.isNativeUInt() || column_data_type.isDateOrDateTime())
+    {
+        return llvm::ConstantInt::get(type, column.getUInt(index));
+    }
+    else if (column_data_type.isNativeInt())
+    {
+        return llvm::ConstantInt::get(type, column.getInt(index));
+    }
+
+    return nullptr;
+}
+
 }

 #endif
--- a/src/DataTypes/Serializations/SerializationLowCardinality.cpp
+++ b/src/DataTypes/Serializations/SerializationLowCardinality.cpp
@ -160,7 +160,7 @@ struct IndexesSerializationType
            return std::make_shared<DataTypeUInt16>();
        if (type == TUInt32)
            return std::make_shared<DataTypeUInt32>();
-        if (type == TUInt64)
+        if (type == TUInt64) //-V547
            return std::make_shared<DataTypeUInt64>();

        throw Exception("Can't create DataType from IndexesSerializationType.", ErrorCodes::LOGICAL_ERROR);
--- a/src/DataTypes/convertMySQLDataType.cpp
+++ b/src/DataTypes/convertMySQLDataType.cpp
@ -105,9 +105,9 @@ DataTypePtr convertMySQLDataType(MultiEnum<MySQLDataTypesSupport> type_support,
    {
        if (precision <= DecimalUtils::max_precision<Decimal32>)
            res = std::make_shared<DataTypeDecimal<Decimal32>>(precision, scale);
-        else if (precision <= DecimalUtils::max_precision<Decimal64>)
+        else if (precision <= DecimalUtils::max_precision<Decimal64>) //-V547
            res = std::make_shared<DataTypeDecimal<Decimal64>>(precision, scale);
-        else if (precision <= DecimalUtils::max_precision<Decimal128>)
+        else if (precision <= DecimalUtils::max_precision<Decimal128>) //-V547
            res = std::make_shared<DataTypeDecimal<Decimal128>>(precision, scale);
    }

--- a/src/DataTypes/getLeastSupertype.cpp
+++ b/src/DataTypes/getLeastSupertype.cpp
@ -423,7 +423,7 @@ DataTypePtr getLeastSupertype(const DataTypes & types)
            size_t min_bit_width_of_integer = std::max(max_bits_of_signed_integer, max_bits_of_unsigned_integer);

            /// If unsigned is not covered by signed.
-            if (max_bits_of_signed_integer && max_bits_of_unsigned_integer >= max_bits_of_signed_integer)
+            if (max_bits_of_signed_integer && max_bits_of_unsigned_integer >= max_bits_of_signed_integer) //-V1051
            {
                // Because 128 and 256 bit integers are significantly slower, we should not promote to them.
                // But if we already have wide numbers, promotion is necessary.
--- a/src/DataTypes/tests/gtest_DataType_deserializeAsText.cpp
+++ b/src/DataTypes/tests/gtest_DataType_deserializeAsText.cpp
@ -15,8 +15,6 @@

 #include <Core/iostream_debug_helpers.h>

-namespace std
-{

 template <typename T>
 inline std::ostream& operator<<(std::ostream & ostr, const std::vector<T> & v)
@ -29,8 +27,6 @@ inline std::ostream& operator<<(std::ostream & ostr, const std::vector<T> & v)
    return ostr << "] (" << v.size() << ") items";
 }

-}
-
 using namespace DB;

 struct ParseDataTypeTestCase
--- a/src/DataTypes/tests/gtest_data_type_get_common_type.cpp
+++ b/src/DataTypes/tests/gtest_data_type_get_common_type.cpp
@ -37,7 +37,7 @@ static auto typesFromString(const std::string & str)

 struct TypesTestCase
 {
-    const char * from_types;
+    const char * from_types = nullptr;
    const char * expected_type = nullptr;
 };

--- a/src/Databases/DatabaseAtomic.cpp
+++ b/src/Databases/DatabaseAtomic.cpp
@ -102,7 +102,7 @@ StoragePtr DatabaseAtomic::detachTable(const String & name)
    auto table = DatabaseOrdinary::detachTableUnlocked(name, lock);
    table_name_to_path.erase(name);
    detached_tables.emplace(table->getStorageID().uuid, table);
-    not_in_use = cleanupDetachedTables();
+    not_in_use = cleanupDetachedTables(); //-V1001
    return table;
 }

--- a/src/Databases/PostgreSQL/fetchPostgreSQLTableStructure.cpp
+++ b/src/Databases/PostgreSQL/fetchPostgreSQLTableStructure.cpp
@ -67,11 +67,11 @@ static DataTypePtr convertPostgreSQLDataType(String & type, bool is_nullable, ui

            if (precision <= DecimalUtils::max_precision<Decimal32>)
                res = std::make_shared<DataTypeDecimal<Decimal32>>(precision, scale);
-            else if (precision <= DecimalUtils::max_precision<Decimal64>)
+            else if (precision <= DecimalUtils::max_precision<Decimal64>) //-V547
                res = std::make_shared<DataTypeDecimal<Decimal64>>(precision, scale);
-            else if (precision <= DecimalUtils::max_precision<Decimal128>)
+            else if (precision <= DecimalUtils::max_precision<Decimal128>) //-V547
                res = std::make_shared<DataTypeDecimal<Decimal128>>(precision, scale);
-            else if (precision <= DecimalUtils::max_precision<Decimal256>)
+            else if (precision <= DecimalUtils::max_precision<Decimal256>) //-V547
                res = std::make_shared<DataTypeDecimal<Decimal256>>(precision, scale);
            else
                throw Exception(ErrorCodes::BAD_ARGUMENTS, "Precision {} and scale {} are too big and not supported", precision, scale);
--- a/src/Dictionaries/CacheDictionary.cpp
+++ b/src/Dictionaries/CacheDictionary.cpp
@ -176,8 +176,9 @@ Columns CacheDictionary<dictionary_key_type>::getColumns(
    ProfileEvents::increment(ProfileEvents::DictCacheKeysExpired, expired_keys_size);
    ProfileEvents::increment(ProfileEvents::DictCacheKeysNotFound, not_found_keys_size);

-    query_count.fetch_add(keys.size());
-    hit_count.fetch_add(found_keys_size);
+    query_count.fetch_add(keys.size(), std::memory_order_relaxed);
+    hit_count.fetch_add(found_keys_size, std::memory_order_relaxed);
+    found_count.fetch_add(found_keys_size, std::memory_order_relaxed);

    MutableColumns & fetched_columns_from_storage = result_of_fetch_from_storage.fetched_columns;
    const PaddedPODArray<KeyState> & key_index_to_state_from_storage = result_of_fetch_from_storage.key_index_to_state;
@ -296,8 +297,9 @@ ColumnUInt8::Ptr CacheDictionary<dictionary_key_type>::hasKeys(const Columns & k
    ProfileEvents::increment(ProfileEvents::DictCacheKeysExpired, expired_keys_size);
    ProfileEvents::increment(ProfileEvents::DictCacheKeysNotFound, not_found_keys_size);

-    query_count.fetch_add(keys.size());
-    hit_count.fetch_add(found_keys_size);
+    query_count.fetch_add(keys.size(), std::memory_order_relaxed);
+    hit_count.fetch_add(found_keys_size, std::memory_order_relaxed);
+    found_count.fetch_add(found_keys_size, std::memory_order_relaxed);

    size_t keys_to_update_size = expired_keys_size + not_found_keys_size;
    auto update_unit = std::make_shared<CacheDictionaryUpdateUnit<dictionary_key_type>>(key_columns, result_of_fetch_from_storage.key_index_to_state, request, keys_to_update_size);
@ -365,8 +367,10 @@ ColumnPtr CacheDictionary<dictionary_key_type>::getHierarchy(
 {
    if (dictionary_key_type == DictionaryKeyType::simple)
    {
-        auto result = getKeysHierarchyDefaultImplementation(this, key_column, key_type);
+        size_t keys_found;
+        auto result = getKeysHierarchyDefaultImplementation(this, key_column, key_type, keys_found);
        query_count.fetch_add(key_column->size(), std::memory_order_relaxed);
+        found_count.fetch_add(keys_found, std::memory_order_relaxed);
        return result;
    }
    else
@ -381,8 +385,10 @@ ColumnUInt8::Ptr CacheDictionary<dictionary_key_type>::isInHierarchy(
 {
    if (dictionary_key_type == DictionaryKeyType::simple)
    {
-        auto result = getKeysIsInHierarchyDefaultImplementation(this, key_column, in_key_column, key_type);
+        size_t keys_found;
+        auto result = getKeysIsInHierarchyDefaultImplementation(this, key_column, in_key_column, key_type, keys_found);
        query_count.fetch_add(key_column->size(), std::memory_order_relaxed);
+        found_count.fetch_add(keys_found, std::memory_order_relaxed);
        return result;
    }
    else
@ -668,6 +674,8 @@ void CacheDictionary<dictionary_key_type>::update(CacheDictionaryUpdateUnitPtr<d
        ProfileEvents::increment(ProfileEvents::DictCacheKeysRequestedMiss, requested_keys_size - found_keys_size);
        ProfileEvents::increment(ProfileEvents::DictCacheKeysRequestedFound, found_keys_size);
        ProfileEvents::increment(ProfileEvents::DictCacheRequests);
+
+        found_count.fetch_add(found_keys_size, std::memory_order_relaxed);
    }
    else
    {
--- a/src/Dictionaries/CacheDictionary.h
+++ b/src/Dictionaries/CacheDictionary.h
@ -75,9 +75,20 @@ public:

    size_t getQueryCount() const override { return query_count.load(std::memory_order_relaxed); }

+    double getFoundRate() const override
+    {
+        size_t queries = query_count.load(std::memory_order_relaxed);
+        if (!queries)
+            return 0;
+        return static_cast<double>(found_count.load(std::memory_order_relaxed)) / queries;
+    }
+
    double getHitRate() const override
    {
-        return static_cast<double>(hit_count.load(std::memory_order_acquire)) / query_count.load(std::memory_order_relaxed);
+        size_t queries = query_count.load(std::memory_order_relaxed);
+        if (!queries)
+            return 0;
+        return static_cast<double>(hit_count.load(std::memory_order_acquire)) / queries;
    }

    bool supportUpdates() const override { return false; }
@ -204,6 +215,7 @@ private:

    mutable std::atomic<size_t> hit_count{0};
    mutable std::atomic<size_t> query_count{0};
+    mutable std::atomic<size_t> found_count{0};

 };

--- a/src/Dictionaries/DirectDictionary.cpp
+++ b/src/Dictionaries/DirectDictionary.cpp
@ -106,6 +106,8 @@ Columns DirectDictionary<dictionary_key_type>::getColumns(

    auto result_columns = request.makeAttributesResultColumns();

+    size_t keys_found = 0;
+
    for (size_t attribute_index = 0; attribute_index < result_columns.size(); ++attribute_index)
    {
        if (!request.shouldFillResultColumnWithIndex(attribute_index))
@ -124,7 +126,10 @@ Columns DirectDictionary<dictionary_key_type>::getColumns(
            const auto * it = key_to_fetched_index.find(requested_key);

            if (it)
+            {
                fetched_column_from_storage->get(it->getMapped(), value_to_insert);
+                ++keys_found;
+            }
            else
                value_to_insert = default_value_provider.getDefaultValue(requested_key_index);

@ -133,6 +138,7 @@ Columns DirectDictionary<dictionary_key_type>::getColumns(
    }

    query_count.fetch_add(requested_keys_size, std::memory_order_relaxed);
+    found_count.fetch_add(keys_found, std::memory_order_relaxed);

    return request.filterRequestedColumns(result_columns);
 }
@ -181,6 +187,8 @@ ColumnUInt8::Ptr DirectDictionary<dictionary_key_type>::hasKeys(

    stream->readPrefix();

+    size_t keys_found = 0;
+
    while (const auto block = stream->read())
    {
        /// Split into keys columns and attribute columns
@ -198,6 +206,8 @@ ColumnUInt8::Ptr DirectDictionary<dictionary_key_type>::hasKeys(
            assert(it);

            size_t result_data_found_index = it->getMapped();
+            /// block_keys_size cannot be used, due to duplicates.
+            keys_found += !result_data[result_data_found_index];
            result_data[result_data_found_index] = true;

            block_keys_extractor.rollbackCurrentKey();
@ -209,6 +219,7 @@ ColumnUInt8::Ptr DirectDictionary<dictionary_key_type>::hasKeys(
    stream->readSuffix();

    query_count.fetch_add(requested_keys_size, std::memory_order_relaxed);
+    found_count.fetch_add(keys_found, std::memory_order_relaxed);

    return result;
 }
@ -220,8 +231,10 @@ ColumnPtr DirectDictionary<dictionary_key_type>::getHierarchy(
 {
    if (dictionary_key_type == DictionaryKeyType::simple)
    {
-        auto result = getKeysHierarchyDefaultImplementation(this, key_column, key_type);
+        size_t keys_found;
+        auto result = getKeysHierarchyDefaultImplementation(this, key_column, key_type, keys_found);
        query_count.fetch_add(key_column->size(), std::memory_order_relaxed);
+        found_count.fetch_add(keys_found, std::memory_order_relaxed);
        return result;
    }
    else
@ -236,8 +249,10 @@ ColumnUInt8::Ptr DirectDictionary<dictionary_key_type>::isInHierarchy(
 {
    if (dictionary_key_type == DictionaryKeyType::simple)
    {
-        auto result = getKeysIsInHierarchyDefaultImplementation(this, key_column, in_key_column, key_type);
+        size_t keys_found = 0;
+        auto result = getKeysIsInHierarchyDefaultImplementation(this, key_column, in_key_column, key_type, keys_found);
        query_count.fetch_add(key_column->size(), std::memory_order_relaxed);
+        found_count.fetch_add(keys_found, std::memory_order_relaxed);
        return result;
    }
    else
--- a/src/Dictionaries/DirectDictionary.h
+++ b/src/Dictionaries/DirectDictionary.h
@ -42,6 +42,14 @@ public:

    size_t getQueryCount() const override { return query_count.load(std::memory_order_relaxed); }

+    double getFoundRate() const override
+    {
+        size_t queries = query_count.load(std::memory_order_relaxed);
+        if (!queries)
+            return 0;
+        return static_cast<double>(found_count.load(std::memory_order_relaxed)) / queries;
+    }
+
    double getHitRate() const override { return 1.0; }

    size_t getElementCount() const override { return 0; }
@ -101,6 +109,7 @@ private:
    const DictionaryLifetime dict_lifetime;

    mutable std::atomic<size_t> query_count{0};
+    mutable std::atomic<size_t> found_count{0};
 };

 extern template class DirectDictionary<DictionaryKeyType::simple>;
--- a/src/Dictionaries/Embedded/RegionsNames.h
+++ b/src/Dictionaries/Embedded/RegionsNames.h
@ -84,7 +84,7 @@ public:
    {
        size_t language_id = static_cast<size_t>(language);

-        if (region_id >= names_refs[language_id].size())
+        if (region_id >= names_refs[language_id].size()) //-V1051
            return StringRef("", 0);

        StringRef ref = names_refs[language_id][region_id];
--- a/src/Dictionaries/FlatDictionary.cpp
+++ b/src/Dictionaries/FlatDictionary.cpp
@ -130,13 +130,17 @@ ColumnUInt8::Ptr FlatDictionary::hasKeys(const Columns & key_columns, const Data
    auto result = ColumnUInt8::create(keys_size);
    auto & out = result->getData();

+    size_t keys_found = 0;
+
    for (size_t key_index = 0; key_index < keys_size; ++key_index)
    {
        const auto key = keys[key_index];
        out[key_index] = key < loaded_keys.size() && loaded_keys[key];
+        keys_found += out[key_index];
    }

    query_count.fetch_add(keys_size, std::memory_order_relaxed);
+    found_count.fetch_add(keys_found, std::memory_order_relaxed);

    return result;
 }
@ -154,16 +158,20 @@ ColumnPtr FlatDictionary::getHierarchy(ColumnPtr key_column, const DataTypePtr &

    auto is_key_valid_func = [&, this](auto & key) { return key < loaded_keys.size() && loaded_keys[key]; };

+    size_t keys_found = 0;
+
    auto get_parent_key_func = [&, this](auto & hierarchy_key)
    {
        bool is_key_valid = hierarchy_key < loaded_keys.size() && loaded_keys[hierarchy_key];
        std::optional<UInt64> result = is_key_valid ? std::make_optional(parent_keys[hierarchy_key]) : std::nullopt;
+        keys_found += result.has_value();
        return result;
    };

    auto dictionary_hierarchy_array = getKeysHierarchyArray(keys, null_value, is_key_valid_func, get_parent_key_func);

    query_count.fetch_add(keys.size(), std::memory_order_relaxed);
+    found_count.fetch_add(keys_found, std::memory_order_relaxed);

    return dictionary_hierarchy_array;
 }
@ -187,16 +195,20 @@ ColumnUInt8::Ptr FlatDictionary::isInHierarchy(

    auto is_key_valid_func = [&, this](auto & key) { return key < loaded_keys.size() && loaded_keys[key]; };

+    size_t keys_found = 0;
+
    auto get_parent_key_func = [&, this](auto & hierarchy_key)
    {
        bool is_key_valid = hierarchy_key < loaded_keys.size() && loaded_keys[hierarchy_key];
        std::optional<UInt64> result = is_key_valid ? std::make_optional(parent_keys[hierarchy_key]) : std::nullopt;
+        keys_found += result.has_value();
        return result;
    };

    auto result = getKeysIsInHierarchyColumn(keys, keys_in, null_value, is_key_valid_func, get_parent_key_func);

    query_count.fetch_add(keys.size(), std::memory_order_relaxed);
+    found_count.fetch_add(keys_found, std::memory_order_relaxed);

    return result;
 }
@ -223,9 +235,11 @@ ColumnPtr FlatDictionary::getDescendants(
            parent_to_child[parent_key].emplace_back(static_cast<UInt64>(i));
    }

-    auto result = getKeysDescendantsArray(keys, parent_to_child, level);
+    size_t keys_found;
+    auto result = getKeysDescendantsArray(keys, parent_to_child, level, keys_found);

    query_count.fetch_add(keys.size(), std::memory_order_relaxed);
+    found_count.fetch_add(keys_found, std::memory_order_relaxed);

    return result;
 }
@ -392,17 +406,23 @@ void FlatDictionary::getItemsImpl(
    const auto & container = std::get<ContainerType<AttributeType>>(attribute.container);
    const auto rows = keys.size();

+    size_t keys_found = 0;
+
    for (size_t row = 0; row < rows; ++row)
    {
        const auto key = keys[row];

        if (key < loaded_keys.size() && loaded_keys[key])
+        {
            set_value(row, static_cast<OutputType>(container[key]));
+            ++keys_found;
+        }
        else
            set_value(row, default_value_extractor[row]);
    }

    query_count.fetch_add(rows, std::memory_order_relaxed);
+    found_count.fetch_add(keys_found, std::memory_order_relaxed);
 }

 template <typename T>
--- a/src/Dictionaries/FlatDictionary.h
+++ b/src/Dictionaries/FlatDictionary.h
@ -47,6 +47,14 @@ public:

    size_t getQueryCount() const override { return query_count.load(std::memory_order_relaxed); }

+    double getFoundRate() const override
+    {
+        size_t queries = query_count.load(std::memory_order_relaxed);
+        if (!queries)
+            return 0;
+        return static_cast<double>(found_count.load(std::memory_order_relaxed)) / queries;
+    }
+
    double getHitRate() const override { return 1.0; }

    size_t getElementCount() const override { return element_count; }
@ -183,6 +191,7 @@ private:
    size_t element_count = 0;
    size_t bucket_count = 0;
    mutable std::atomic<size_t> query_count{0};
+    mutable std::atomic<size_t> found_count{0};

    BlockPtr update_field_loaded_block;
 };
--- a/src/Dictionaries/HTTPDictionarySource.cpp
+++ b/src/Dictionaries/HTTPDictionarySource.cpp
@ -42,7 +42,6 @@ HTTPDictionarySource::HTTPDictionarySource(
    , context(context_)
    , timeouts(ConnectionTimeouts::getHTTPTimeouts(context))
 {
-
    if (check_config)
        context->getRemoteHostFilter().checkURL(Poco::URI(url));

@ -87,6 +86,16 @@ HTTPDictionarySource::HTTPDictionarySource(const HTTPDictionarySource & other)
    credentials.setPassword(other.credentials.getPassword());
 }

+BlockInputStreamPtr HTTPDictionarySource::createWrappedBuffer(std::unique_ptr<ReadWriteBufferFromHTTP> http_buffer_ptr)
+{
+    Poco::URI uri(url);
+    String http_request_compression_method_str = http_buffer_ptr->getCompressMethod();
+    auto in_ptr_wrapped
+        = wrapReadBufferWithCompressionMethod(std::move(http_buffer_ptr), chooseCompressionMethod(uri.getPath(), http_request_compression_method_str));
+    auto input_stream = context->getInputFormat(format, *in_ptr_wrapped, sample_block, max_block_size);
+    return std::make_shared<OwningBlockInputStream<ReadBuffer>>(input_stream, std::move(in_ptr_wrapped));
+}
+
 void HTTPDictionarySource::getUpdateFieldAndDate(Poco::URI & uri)
 {
    if (update_time != std::chrono::system_clock::from_time_t(0))
@ -109,10 +118,15 @@ BlockInputStreamPtr HTTPDictionarySource::loadAll()
    LOG_TRACE(log, "loadAll {}", toString());
    Poco::URI uri(url);
    auto in_ptr = std::make_unique<ReadWriteBufferFromHTTP>(
-        uri, Poco::Net::HTTPRequest::HTTP_GET, ReadWriteBufferFromHTTP::OutStreamCallback(), timeouts,
-        0, credentials, DBMS_DEFAULT_BUFFER_SIZE, header_entries);
-    auto input_stream = context->getInputFormat(format, *in_ptr, sample_block, max_block_size);
-    return std::make_shared<OwningBlockInputStream<ReadWriteBufferFromHTTP>>(input_stream, std::move(in_ptr));
+        uri,
+        Poco::Net::HTTPRequest::HTTP_GET,
+        ReadWriteBufferFromHTTP::OutStreamCallback(),
+        timeouts,
+        0,
+        credentials,
+        DBMS_DEFAULT_BUFFER_SIZE,
+        header_entries);
+    return createWrappedBuffer(std::move(in_ptr));
 }

 BlockInputStreamPtr HTTPDictionarySource::loadUpdatedAll()
@ -121,10 +135,15 @@ BlockInputStreamPtr HTTPDictionarySource::loadUpdatedAll()
    getUpdateFieldAndDate(uri);
    LOG_TRACE(log, "loadUpdatedAll {}", uri.toString());
    auto in_ptr = std::make_unique<ReadWriteBufferFromHTTP>(
-        uri, Poco::Net::HTTPRequest::HTTP_GET, ReadWriteBufferFromHTTP::OutStreamCallback(), timeouts,
-        0, credentials, DBMS_DEFAULT_BUFFER_SIZE, header_entries);
-    auto input_stream = context->getInputFormat(format, *in_ptr, sample_block, max_block_size);
-    return std::make_shared<OwningBlockInputStream<ReadWriteBufferFromHTTP>>(input_stream, std::move(in_ptr));
+        uri,
+        Poco::Net::HTTPRequest::HTTP_GET,
+        ReadWriteBufferFromHTTP::OutStreamCallback(),
+        timeouts,
+        0,
+        credentials,
+        DBMS_DEFAULT_BUFFER_SIZE,
+        header_entries);
+    return createWrappedBuffer(std::move(in_ptr));
 }

 BlockInputStreamPtr HTTPDictionarySource::loadIds(const std::vector<UInt64> & ids)
@ -142,10 +161,15 @@ BlockInputStreamPtr HTTPDictionarySource::loadIds(const std::vector<UInt64> & id

    Poco::URI uri(url);
    auto in_ptr = std::make_unique<ReadWriteBufferFromHTTP>(
-        uri, Poco::Net::HTTPRequest::HTTP_POST, out_stream_callback, timeouts,
-        0, credentials, DBMS_DEFAULT_BUFFER_SIZE, header_entries);
-    auto input_stream = context->getInputFormat(format, *in_ptr, sample_block, max_block_size);
-    return std::make_shared<OwningBlockInputStream<ReadWriteBufferFromHTTP>>(input_stream, std::move(in_ptr));
+        uri,
+        Poco::Net::HTTPRequest::HTTP_POST,
+        out_stream_callback,
+        timeouts,
+        0,
+        credentials,
+        DBMS_DEFAULT_BUFFER_SIZE,
+        header_entries);
+    return createWrappedBuffer(std::move(in_ptr));
 }

 BlockInputStreamPtr HTTPDictionarySource::loadKeys(const Columns & key_columns, const std::vector<size_t> & requested_rows)
@ -163,10 +187,15 @@ BlockInputStreamPtr HTTPDictionarySource::loadKeys(const Columns & key_columns,

    Poco::URI uri(url);
    auto in_ptr = std::make_unique<ReadWriteBufferFromHTTP>(
-        uri, Poco::Net::HTTPRequest::HTTP_POST, out_stream_callback, timeouts,
-        0, credentials, DBMS_DEFAULT_BUFFER_SIZE, header_entries);
-    auto input_stream = context->getInputFormat(format, *in_ptr, sample_block, max_block_size);
-    return std::make_shared<OwningBlockInputStream<ReadWriteBufferFromHTTP>>(input_stream, std::move(in_ptr));
+        uri,
+        Poco::Net::HTTPRequest::HTTP_POST,
+        out_stream_callback,
+        timeouts,
+        0,
+        credentials,
+        DBMS_DEFAULT_BUFFER_SIZE,
+        header_entries);
+    return createWrappedBuffer(std::move(in_ptr));
 }

 bool HTTPDictionarySource::isModified() const
@ -198,21 +227,19 @@ std::string HTTPDictionarySource::toString() const
 void registerDictionarySourceHTTP(DictionarySourceFactory & factory)
 {
    auto create_table_source = [=](const DictionaryStructure & dict_struct,
-                                 const Poco::Util::AbstractConfiguration & config,
-                                 const std::string & config_prefix,
-                                 Block & sample_block,
-                                 ContextPtr context,
-                                 const std::string & /* default_database */,
-                                 bool check_config) -> DictionarySourcePtr
-    {
+                                   const Poco::Util::AbstractConfiguration & config,
+                                   const std::string & config_prefix,
+                                   Block & sample_block,
+                                   ContextPtr context,
+                                   const std::string & /* default_database */,
+                                   bool check_config) -> DictionarySourcePtr {
        if (dict_struct.has_expressions)
            throw Exception(ErrorCodes::LOGICAL_ERROR, "Dictionary source of type `http` does not support attribute expressions");

        auto context_local_copy = copyContextAndApplySettings(config_prefix, context, config);

        return std::make_unique<HTTPDictionarySource>(
-            dict_struct, config, config_prefix + ".http",
-            sample_block, context_local_copy, check_config);
+            dict_struct, config, config_prefix + ".http", sample_block, context_local_copy, check_config);
    };
    factory.registerSource("http", create_table_source);
 }
--- a/src/Dictionaries/HTTPDictionarySource.h
+++ b/src/Dictionaries/HTTPDictionarySource.h
@ -8,6 +8,7 @@
 #include "DictionaryStructure.h"
 #include "IDictionarySource.h"
 #include <Interpreters/Context.h>
+#include <IO/CompressionMethod.h>

 namespace Poco
 {
@ -53,6 +54,9 @@ public:
 private:
    void getUpdateFieldAndDate(Poco::URI & uri);

+    // wrap buffer using encoding from made request
+    BlockInputStreamPtr createWrappedBuffer(std::unique_ptr<ReadWriteBufferFromHTTP> http_buffer);
+
    Poco::Logger * log;

    LocalDateTime getLastModification() const;
@ -70,3 +74,4 @@ private:
 };

 }
+
--- a/src/Dictionaries/HashedDictionary.cpp
+++ b/src/Dictionaries/HashedDictionary.cpp
@ -162,6 +162,7 @@ ColumnUInt8::Ptr HashedDictionary<dictionary_key_type, sparse>::hasKeys(const Co

    const auto & attribute = attributes.front();
    bool is_attribute_nullable = attribute.is_nullable_set.has_value();
+    size_t keys_found = 0;

    getAttributeContainer(0, [&](const auto & container)
    {
@ -171,6 +172,8 @@ ColumnUInt8::Ptr HashedDictionary<dictionary_key_type, sparse>::hasKeys(const Co

            out[requested_key_index] = container.find(requested_key) != container.end();

+            keys_found += out[requested_key_index];
+
            if (is_attribute_nullable && !out[requested_key_index])
                out[requested_key_index] = attribute.is_nullable_set->find(requested_key) != nullptr;

@ -179,6 +182,7 @@ ColumnUInt8::Ptr HashedDictionary<dictionary_key_type, sparse>::hasKeys(const Co
    });

    query_count.fetch_add(keys_size, std::memory_order_relaxed);
+    found_count.fetch_add(keys_found, std::memory_order_relaxed);

    return result;
 }
@ -201,6 +205,8 @@ ColumnPtr HashedDictionary<dictionary_key_type, sparse>::getHierarchy(ColumnPtr

        auto is_key_valid_func = [&](auto & key) { return parent_keys_map.find(key) != parent_keys_map.end(); };

+        size_t keys_found = 0;
+
        auto get_parent_func = [&](auto & hierarchy_key)
        {
            std::optional<UInt64> result;
@ -210,12 +216,15 @@ ColumnPtr HashedDictionary<dictionary_key_type, sparse>::getHierarchy(ColumnPtr
            if (it != parent_keys_map.end())
                result = getValueFromCell(it);

+            keys_found +=result.has_value();
+
            return result;
        };

        auto dictionary_hierarchy_array = getKeysHierarchyArray(keys, null_value, is_key_valid_func, get_parent_func);

        query_count.fetch_add(keys.size(), std::memory_order_relaxed);
+        found_count.fetch_add(keys_found, std::memory_order_relaxed);

        return dictionary_hierarchy_array;
    }
@ -247,6 +256,8 @@ ColumnUInt8::Ptr HashedDictionary<dictionary_key_type, sparse>::isInHierarchy(

        auto is_key_valid_func = [&](auto & key) { return parent_keys_map.find(key) != parent_keys_map.end(); };

+        size_t keys_found = 0;
+
        auto get_parent_func = [&](auto & hierarchy_key)
        {
            std::optional<UInt64> result;
@ -256,12 +267,15 @@ ColumnUInt8::Ptr HashedDictionary<dictionary_key_type, sparse>::isInHierarchy(
            if (it != parent_keys_map.end())
                result = getValueFromCell(it);

+            keys_found += result.has_value();
+
            return result;
        };

        auto result = getKeysIsInHierarchyColumn(keys, keys_in, null_value, is_key_valid_func, get_parent_func);

        query_count.fetch_add(keys.size(), std::memory_order_relaxed);
+        found_count.fetch_add(keys_found, std::memory_order_relaxed);

        return result;
    }
@ -290,9 +304,11 @@ ColumnPtr HashedDictionary<dictionary_key_type, sparse>::getDescendants(
        for (const auto & [key, value] : parent_keys)
            parent_to_child[value].emplace_back(key);

-        auto result = getKeysDescendantsArray(keys, parent_to_child, level);
+        size_t keys_found;
+        auto result = getKeysDescendantsArray(keys, parent_to_child, level, keys_found);

        query_count.fetch_add(keys.size(), std::memory_order_relaxed);
+        found_count.fetch_add(keys_found, std::memory_order_relaxed);

        return result;
    }
@ -493,6 +509,8 @@ void HashedDictionary<dictionary_key_type, sparse>::getItemsImpl(

    bool is_attribute_nullable = attribute.is_nullable_set.has_value();

+    size_t keys_found = 0;
+
    for (size_t key_index = 0; key_index < keys_size; ++key_index)
    {
        auto key = keys_extractor.extractCurrentKey();
@ -500,7 +518,10 @@ void HashedDictionary<dictionary_key_type, sparse>::getItemsImpl(
        const auto it = attribute_container.find(key);

        if (it != attribute_container.end())
+        {
            set_value(key_index, getValueFromCell(it));
+            ++keys_found;
+        }
        else
        {
            if (is_attribute_nullable && attribute.is_nullable_set->find(key) != nullptr)
@ -513,6 +534,7 @@ void HashedDictionary<dictionary_key_type, sparse>::getItemsImpl(
    }

    query_count.fetch_add(keys_size, std::memory_order_relaxed);
+    found_count.fetch_add(keys_found, std::memory_order_relaxed);
 }

 template <DictionaryKeyType dictionary_key_type, bool sparse>
--- a/src/Dictionaries/HashedDictionary.h
+++ b/src/Dictionaries/HashedDictionary.h
@ -59,6 +59,14 @@ public:

    size_t getQueryCount() const override { return query_count.load(std::memory_order_relaxed); }

+    double getFoundRate() const override
+    {
+        size_t queries = query_count.load(std::memory_order_relaxed);
+        if (!queries)
+            return 0;
+        return static_cast<double>(found_count.load(std::memory_order_relaxed)) / queries;
+    }
+
    double getHitRate() const override { return 1.0; }

    size_t getElementCount() const override { return element_count; }
@ -219,6 +227,7 @@ private:
    size_t element_count = 0;
    size_t bucket_count = 0;
    mutable std::atomic<size_t> query_count{0};
+    mutable std::atomic<size_t> found_count{0};

    BlockPtr update_field_loaded_block;
    Arena complex_key_arena;
--- a/src/Dictionaries/HierarchyDictionariesUtils.cpp
+++ b/src/Dictionaries/HierarchyDictionariesUtils.cpp
@ -84,8 +84,14 @@ namespace
    }
 }

-ColumnPtr getKeysHierarchyDefaultImplementation(const IDictionary * dictionary, ColumnPtr key_column, const DataTypePtr & key_type)
+ColumnPtr getKeysHierarchyDefaultImplementation(
+    const IDictionary * dictionary,
+    ColumnPtr key_column,
+    const DataTypePtr & key_type,
+    size_t & valid_keys)
 {
+    valid_keys = 0;
+
    key_column = key_column->convertToFullColumnIfConst();
    const auto * key_column_typed = checkAndGetColumn<ColumnVector<UInt64>>(*key_column);
    if (!key_column_typed)
@ -104,6 +110,7 @@ ColumnPtr getKeysHierarchyDefaultImplementation(const IDictionary * dictionary,
    {
        auto it = key_to_parent_key.find(key);
        std::optional<UInt64> result = (it != nullptr ? std::make_optional(it->getMapped()) : std::nullopt);
+        valid_keys += result.has_value();
        return result;
    };

@ -117,8 +124,11 @@ ColumnUInt8::Ptr getKeysIsInHierarchyDefaultImplementation(
    const IDictionary * dictionary,
    ColumnPtr key_column,
    ColumnPtr in_key_column,
-    const DataTypePtr & key_type)
+    const DataTypePtr & key_type,
+    size_t & valid_keys)
 {
+    valid_keys = 0;
+
    key_column = key_column->convertToFullColumnIfConst();
    in_key_column = in_key_column->convertToFullColumnIfConst();

@ -143,6 +153,7 @@ ColumnUInt8::Ptr getKeysIsInHierarchyDefaultImplementation(
    {
        auto it = key_to_parent_key.find(key);
        std::optional<UInt64> result = (it != nullptr ? std::make_optional(it->getMapped()) : std::nullopt);
+        valid_keys += result.has_value();
        return result;
    };

--- a/src/Dictionaries/HierarchyDictionariesUtils.h
+++ b/src/Dictionaries/HierarchyDictionariesUtils.h
@ -196,6 +196,8 @@ namespace detail
      * Hierarchy result is ElementsAndOffsets structure, for each element there is descendants array,
      * with size offset[element_index] - (element_index > 0 ? offset[element_index - 1] : 0).
      *
+      * @param valid_keys - number of keys that are valid in parent_to_child map
+      *
      * Example:
      * id  parent_id
      * 1   0
@ -218,11 +220,13 @@ namespace detail
    ElementsAndOffsets<KeyType> getDescendants(
        const PaddedPODArray<KeyType> & keys,
        const HashMap<KeyType, PaddedPODArray<KeyType>> & parent_to_child,
-        Strategy strategy)
+        Strategy strategy,
+        size_t & valid_keys)
    {
        /// If strategy is GetAllDescendantsStrategy we try to cache and later reuse previously calculated descendants.
        /// If strategy is GetDescendantsAtSpecificLevelStrategy we does not use cache strategy.
        size_t keys_size = keys.size();
+        valid_keys = 0;

        PaddedPODArray<KeyType> descendants;
        descendants.reserve(keys_size);
@ -265,6 +269,7 @@ namespace detail
                descendants_offsets.emplace_back(descendants.size());
                continue;
            }
+            ++valid_keys;

            next_keys_to_process_stack.emplace_back(KeyAndDepth{requested_key, 0});

@ -425,43 +430,52 @@ ColumnUInt8::Ptr getKeysIsInHierarchyColumn(
 }

 /// Returns descendants array column for keys
+///
+/// @param valid_keys - number of keys that are valid in parent_to_child map
 template <typename KeyType>
 ColumnPtr getKeysDescendantsArray(
    const PaddedPODArray<KeyType> & requested_keys,
    const HashMap<KeyType, PaddedPODArray<KeyType>> & parent_to_child,
-    size_t level)
+    size_t level,
+    size_t & valid_keys)
 {
    if (level == 0)
    {
        detail::GetAllDescendantsStrategy strategy { .level = level };
-        auto elements_and_offsets = detail::getDescendants(requested_keys, parent_to_child, strategy);
+        auto elements_and_offsets = detail::getDescendants(requested_keys, parent_to_child, strategy, valid_keys);
        return detail::convertElementsAndOffsetsIntoArray(std::move(elements_and_offsets));
    }
    else
    {
        detail::GetDescendantsAtSpecificLevelStrategy strategy { .level = level };
-        auto elements_and_offsets = detail::getDescendants(requested_keys, parent_to_child, strategy);
+        auto elements_and_offsets = detail::getDescendants(requested_keys, parent_to_child, strategy, valid_keys);
        return detail::convertElementsAndOffsetsIntoArray(std::move(elements_and_offsets));
    }
 }

 /** Default getHierarchy implementation for dictionaries that does not have structure with child to parent representation.
  * Implementation will build such structure with getColumn calls, and then getHierarchy for such structure.
-  * Returns ColumnArray with hierarchy arrays for keys from key_column.
+  *
+  * @param valid_keys - number of keys (from @key_column) for which information about parent exists.
+  * @return ColumnArray with hierarchy arrays for keys from key_column.
  */
 ColumnPtr getKeysHierarchyDefaultImplementation(
    const IDictionary * dictionary,
    ColumnPtr key_column,
-    const DataTypePtr & key_type);
+    const DataTypePtr & key_type,
+    size_t & valid_keys);

 /** Default isInHierarchy implementation for dictionaries that does not have structure with child to parent representation.
  * Implementation will build such structure with getColumn calls, and then getHierarchy for such structure.
-  * Returns UInt8 column if key from in_key_column is in key hierarchy from key_column.
+  *
+  * @param valid_keys - number of keys (from @key_column) for which information about parent exists.
+  * @return UInt8 column if key from in_key_column is in key hierarchy from key_column.
  */
 ColumnUInt8::Ptr getKeysIsInHierarchyDefaultImplementation(
    const IDictionary * dictionary,
    ColumnPtr key_column,
    ColumnPtr in_key_column,
-    const DataTypePtr & key_type);
+    const DataTypePtr & key_type,
+    size_t & valid_keys);

 }
--- a/src/Dictionaries/IDictionary.h
+++ b/src/Dictionaries/IDictionary.h
@ -90,6 +90,8 @@ struct IDictionary : public IExternalLoadable

    virtual size_t getQueryCount() const = 0;

+    virtual double getFoundRate() const = 0;
+
    virtual double getHitRate() const = 0;

    virtual size_t getElementCount() const = 0;
--- a/src/Dictionaries/IPAddressDictionary.cpp
+++ b/src/Dictionaries/IPAddressDictionary.cpp
@ -275,7 +275,9 @@ ColumnUInt8::Ptr IPAddressDictionary::hasKeys(const Columns & key_columns, const
    const auto rows = first_column->size();

    auto result = ColumnUInt8::create(rows);
-    auto& out = result->getData();
+    auto & out = result->getData();
+
+    size_t keys_found = 0;

    if (first_column->isNumeric())
    {
@ -285,6 +287,7 @@ ColumnUInt8::Ptr IPAddressDictionary::hasKeys(const Columns & key_columns, const
            auto addrv4 = UInt32(first_column->get64(i));
            auto found = tryLookupIPv4(addrv4, addrv6_buf);
            out[i] = (found != ipNotFound());
+            keys_found += out[i];
        }
    }
    else
@ -297,10 +300,12 @@ ColumnUInt8::Ptr IPAddressDictionary::hasKeys(const Columns & key_columns, const

            auto found = tryLookupIPv6(reinterpret_cast<const uint8_t *>(addr.data));
            out[i] = (found != ipNotFound());
+            keys_found += out[i];
        }
    }

    query_count.fetch_add(rows, std::memory_order_relaxed);
+    found_count.fetch_add(keys_found, std::memory_order_relaxed);

    return result;
 }
@ -680,6 +685,8 @@ void IPAddressDictionary::getItemsImpl(

    auto & vec = std::get<ContainerType<AttributeType>>(attribute.maps);

+    size_t keys_found = 0;
+
    if (first_column->isNumeric())
    {
        uint8_t addrv6_buf[IPV6_BINARY_LENGTH];
@ -689,7 +696,10 @@ void IPAddressDictionary::getItemsImpl(
            auto addrv4 = UInt32(first_column->get64(i));
            auto found = tryLookupIPv4(addrv4, addrv6_buf);
            if (found != ipNotFound())
+            {
                set_value(i, static_cast<OutputType>(vec[*found]));
+                ++keys_found;
+            }
            else
                set_value(i, default_value_extractor[i]);
        }
@ -704,13 +714,17 @@ void IPAddressDictionary::getItemsImpl(

            auto found = tryLookupIPv6(reinterpret_cast<const uint8_t *>(addr.data));
            if (found != ipNotFound())
+            {
                set_value(i, static_cast<OutputType>(vec[*found]));
+                ++keys_found;
+            }
            else
                set_value(i, default_value_extractor[i]);
        }
    }

    query_count.fetch_add(rows, std::memory_order_relaxed);
+    found_count.fetch_add(keys_found, std::memory_order_relaxed);
 }

 template <typename T>
--- a/src/Dictionaries/IPAddressDictionary.h
+++ b/src/Dictionaries/IPAddressDictionary.h
@ -38,6 +38,14 @@ public:

    size_t getQueryCount() const override { return query_count.load(std::memory_order_relaxed); }

+    double getFoundRate() const override
+    {
+        size_t queries = query_count.load(std::memory_order_relaxed);
+        if (!queries)
+            return 0;
+        return static_cast<double>(found_count.load(std::memory_order_relaxed)) / queries;
+    }
+
    double getHitRate() const override { return 1.0; }

    size_t getElementCount() const override { return element_count; }
@ -202,6 +210,7 @@ private:
    size_t element_count = 0;
    size_t bucket_count = 0;
    mutable std::atomic<size_t> query_count{0};
+    mutable std::atomic<size_t> found_count{0};

    Poco::Logger * logger;
 };
--- a/src/Dictionaries/MySQLDictionarySource.cpp
+++ b/src/Dictionaries/MySQLDictionarySource.cpp
@ -164,7 +164,7 @@ bool MySQLDictionarySource::isModified() const
    if (!invalidate_query.empty())
    {
        auto response = doInvalidateQuery(invalidate_query);
-        if (response == invalidate_query_response)
+        if (response == invalidate_query_response) //-V1051
            return false;
        invalidate_query_response = response;
        return true;
--- a/src/Dictionaries/PolygonDictionary.cpp
+++ b/src/Dictionaries/PolygonDictionary.cpp
@ -64,6 +64,8 @@ ColumnPtr IPolygonDictionary::getColumn(
    Field row_value_to_insert;
    size_t polygon_index = 0;

+    size_t keys_found = 0;
+
    if (unlikely(complex_attribute))
    {
        for (size_t requested_key_index = 0; requested_key_index < requested_key_points.size(); ++requested_key_index)
@ -74,6 +76,7 @@ ColumnPtr IPolygonDictionary::getColumn(
            {
                size_t attribute_values_index = polygon_index_to_attribute_value_index[polygon_index];
                attribute_values_column->get(attribute_values_index, row_value_to_insert);
+                ++keys_found;
            }
            else
                row_value_to_insert = default_value_provider.getDefaultValue(requested_key_index);
@ -110,6 +113,7 @@ ColumnPtr IPolygonDictionary::getColumn(
                        size_t attribute_values_index = polygon_index_to_attribute_value_index[polygon_index];
                        auto data_to_insert = attribute_values_column->getDataAt(attribute_values_index);
                        result_column_typed.insertData(data_to_insert.data, data_to_insert.size);
+                        ++keys_found;
                    }
                    else
                        result_column_typed.insert(default_value_provider.getDefaultValue(requested_key_index));
@ -129,6 +133,7 @@ ColumnPtr IPolygonDictionary::getColumn(
                        size_t attribute_values_index = polygon_index_to_attribute_value_index[polygon_index];
                        auto & item = attribute_data[attribute_values_index];
                        result_data.emplace_back(item);
+                        ++keys_found;
                    }
                    else
                    {
@ -143,6 +148,7 @@ ColumnPtr IPolygonDictionary::getColumn(
    }

    query_count.fetch_add(requested_key_points.size(), std::memory_order_relaxed);
+    found_count.fetch_add(keys_found, std::memory_order_relaxed);

    return result;
 }
@ -285,16 +291,20 @@ ColumnUInt8::Ptr IPolygonDictionary::hasKeys(const Columns & key_columns, const
    std::vector<IPolygonDictionary::Point> points = extractPoints(key_columns);

    auto result = ColumnUInt8::create(points.size());
-    auto& out = result->getData();
+    auto & out = result->getData();
+
+    size_t keys_found = 0;

    for (size_t i = 0; i < points.size(); ++i)
    {
        size_t unused_find_result = 0;
        auto & point = points[i];
        out[i] = find(point, unused_find_result);
+        keys_found += out[i];
    }

    query_count.fetch_add(points.size(), std::memory_order_relaxed);
+    found_count.fetch_add(keys_found, std::memory_order_relaxed);

    return result;
 }
--- a/src/Dictionaries/PolygonDictionary.h
+++ b/src/Dictionaries/PolygonDictionary.h
@ -63,6 +63,14 @@ public:

    size_t getQueryCount() const override { return query_count.load(std::memory_order_relaxed); }

+    double getFoundRate() const override
+    {
+        size_t queries = query_count.load(std::memory_order_relaxed);
+        if (!queries)
+            return 0;
+        return static_cast<double>(found_count.load(std::memory_order_relaxed)) / queries;
+    }
+
    double getHitRate() const override { return 1.0; }

    size_t getElementCount() const override { return attributes.empty() ? 0 : attributes.front()->size(); }
@ -141,6 +149,7 @@ private:

    size_t bytes_allocated = 0;
    mutable std::atomic<size_t> query_count{0};
+    mutable std::atomic<size_t> found_count{0};

    /** Since the original data may have been in the form of multi-polygons, an id is stored for each single polygon
     *  corresponding to the row in which any other attributes for this entry are located.
--- a/src/Dictionaries/PostgreSQLDictionarySource.cpp
+++ b/src/Dictionaries/PostgreSQLDictionarySource.cpp
@ -103,7 +103,7 @@ bool PostgreSQLDictionarySource::isModified() const
    if (!invalidate_query.empty())
    {
        auto response = doInvalidateQuery(invalidate_query);
-        if (response == invalidate_query_response)
+        if (response == invalidate_query_response) //-V1051
            return false;
        invalidate_query_response = response;
    }
--- a/src/Dictionaries/RangeHashedDictionary.cpp
+++ b/src/Dictionaries/RangeHashedDictionary.cpp
@ -195,17 +195,20 @@ ColumnUInt8::Ptr RangeHashedDictionary::hasKeys(const Columns & key_columns, con

    ColumnUInt8::Ptr result;

+    size_t keys_found = 0;
+
    auto type_call = [&](const auto & dictionary_attribute_type)
    {
        using Type = std::decay_t<decltype(dictionary_attribute_type)>;
        using AttributeType = typename Type::AttributeType;
        using ValueType = DictionaryValueType<AttributeType>;
-        result = hasKeysImpl<ValueType>(attribute, ids, dates);
+        result = hasKeysImpl<ValueType>(attribute, ids, dates, keys_found);
    };

    callOnDictionaryAttributeType(attribute.type, type_call);

    query_count.fetch_add(ids.size(), std::memory_order_relaxed);
+    found_count.fetch_add(keys_found, std::memory_order_relaxed);

    return result;
 }
@ -214,13 +217,16 @@ template <typename AttributeType>
 ColumnUInt8::Ptr RangeHashedDictionary::hasKeysImpl(
    const Attribute & attribute,
    const PaddedPODArray<UInt64> & ids,
-    const PaddedPODArray<RangeStorageType> & dates) const
+    const PaddedPODArray<RangeStorageType> & dates,
+    size_t & keys_found) const
 {
    auto result = ColumnUInt8::create(ids.size());
    auto& out = result->getData();

    const auto & attr = *std::get<Ptr<AttributeType>>(attribute.maps);

+    keys_found = 0;
+
    for (const auto row : ext::range(0, ids.size()))
    {
        const auto it = attr.find(ids[row]);
@ -237,10 +243,8 @@ ColumnUInt8::Ptr RangeHashedDictionary::hasKeysImpl(
                    return v.range.contains(date);
                });

-            if (val_it != std::end(ranges_and_values))
-                out[row] = true;
-            else
-                out[row] = false;
+            out[row] = val_it != std::end(ranges_and_values);
+            keys_found += out[row];
        }
        else
            out[row] = false;
@ -396,6 +400,8 @@ void RangeHashedDictionary::getItemsImpl(

    const auto & attr = *std::get<Ptr<AttributeType>>(attribute.maps);

+    size_t keys_found = 0;
+
    for (const auto row : ext::range(0, ids.size()))
    {
        const auto it = attr.find(ids[row]);
@ -413,7 +419,8 @@ void RangeHashedDictionary::getItemsImpl(

            if (val_it != std::end(ranges_and_values))
            {
-                auto& value = val_it->value;
+                ++keys_found;
+                auto & value = val_it->value;

                if (value)
                    set_value(row, static_cast<OutputType>(*value), false); // NOLINT
@ -432,6 +439,7 @@ void RangeHashedDictionary::getItemsImpl(
    }

    query_count.fetch_add(ids.size(), std::memory_order_relaxed);
+    found_count.fetch_add(keys_found, std::memory_order_relaxed);
 }


--- a/src/Dictionaries/RangeHashedDictionary.h
+++ b/src/Dictionaries/RangeHashedDictionary.h
@ -32,6 +32,14 @@ public:

    size_t getQueryCount() const override { return query_count.load(std::memory_order_relaxed); }

+    double getFoundRate() const override
+    {
+        size_t queries = query_count.load(std::memory_order_relaxed);
+        if (!queries)
+            return 0;
+        return static_cast<double>(found_count.load(std::memory_order_relaxed)) / queries;
+    }
+
    double getHitRate() const override { return 1.0; }

    size_t getElementCount() const override { return element_count; }
@ -163,7 +171,8 @@ private:
    ColumnUInt8::Ptr hasKeysImpl(
        const Attribute & attribute,
        const PaddedPODArray<UInt64> & ids,
-        const PaddedPODArray<RangeStorageType> & dates) const;
+        const PaddedPODArray<RangeStorageType> & dates,
+        size_t & keys_found) const;

    template <typename T>
    static void setAttributeValueImpl(Attribute & attribute, const UInt64 id, const Range & range, const Field & value);
@ -201,6 +210,7 @@ private:
    size_t element_count = 0;
    size_t bucket_count = 0;
    mutable std::atomic<size_t> query_count{0};
+    mutable std::atomic<size_t> found_count{0};
 };

 }
--- a/Show More
+++ b/Show More