diff --git a/docs/en/engines/table-engines/mergetree-family/replacingmergetree.md b/docs/en/engines/table-engines/mergetree-family/replacingmergetree.md
index b82bc65afc2..d0e981ffc7b 100644
--- a/docs/en/engines/table-engines/mergetree-family/replacingmergetree.md
+++ b/docs/en/engines/table-engines/mergetree-family/replacingmergetree.md
@@ -34,7 +34,7 @@ For a description of request parameters, see [statement description](../../../sq
 
 **ReplacingMergeTree Parameters**
 
--   `ver` — column with version. Type `UInt*`, `Date` or `DateTime`. Optional parameter.
+-   `ver` — column with version. Type `UInt*`, `Date`, `DateTime` or `DateTime64`. Optional parameter.
 
     When merging, `ReplacingMergeTree` from all the rows with the same sorting key leaves only one:
 
@@ -66,5 +66,3 @@ All of the parameters excepting `ver` have the same meaning as in `MergeTree`.
 -   `ver` - column with the version. Optional parameter. For a description, see the text above.
 
 </details>
-
-[Original article](https://clickhouse.tech/docs/en/operations/table_engines/replacingmergetree/) <!--hide-->
diff --git a/docs/en/operations/system-tables/stack_trace.md b/docs/en/operations/system-tables/stack_trace.md
index 44b13047cc3..a1214982134 100644
--- a/docs/en/operations/system-tables/stack_trace.md
+++ b/docs/en/operations/system-tables/stack_trace.md
@@ -6,6 +6,7 @@ To analyze stack frames, use the `addressToLine`, `addressToSymbol` and `demangl
 
 Columns:
 
+-   `thread_name` ([String](../../sql-reference/data-types/string.md)) — Thread name.
 -   `thread_id` ([UInt64](../../sql-reference/data-types/int-uint.md)) — Thread identifier.
 -   `query_id` ([String](../../sql-reference/data-types/string.md)) — Query identifier that can be used to get details about a query that was running from the [query_log](../system-tables/query_log.md) system table.
 -   `trace` ([Array(UInt64)](../../sql-reference/data-types/array.md)) — A [stack trace](https://en.wikipedia.org/wiki/Stack_trace) which represents a list of physical addresses where the called methods are stored.
@@ -21,61 +22,49 @@ SET allow_introspection_functions = 1;
 Getting symbols from ClickHouse object files:
 
 ``` sql
-WITH arrayMap(x -> demangle(addressToSymbol(x)), trace) AS all SELECT thread_id, query_id, arrayStringConcat(all, '\n') AS res FROM system.stack_trace LIMIT 1 \G
+WITH arrayMap(x -> demangle(addressToSymbol(x)), trace) AS all SELECT thread_name, thread_id, query_id, arrayStringConcat(all, '\n') AS res FROM system.stack_trace LIMIT 1 \G;
 ```
 
 ``` text
 Row 1:
 ──────
-thread_id: 686
-query_id:  1a11f70b-626d-47c1-b948-f9c7b206395d
-res:       sigqueue
-DB::StorageSystemStackTrace::fillData(std::__1::vector<COW<DB::IColumn>::mutable_ptr<DB::IColumn>, std::__1::allocator<COW<DB::IColumn>::mutable_ptr<DB::IColumn> > >&, DB::Context const&, DB::SelectQueryInfo const&) const
-DB::IStorageSystemOneBlock<DB::StorageSystemStackTrace>::read(std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > > > const&, DB::SelectQueryInfo const&, DB::Context const&, DB::QueryProcessingStage::Enum, unsigned long, unsigned int)
-DB::InterpreterSelectQuery::executeFetchColumns(DB::QueryProcessingStage::Enum, DB::QueryPipeline&, std::__1::shared_ptr<DB::PrewhereInfo> const&, std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > > > const&)
-DB::InterpreterSelectQuery::executeImpl(DB::QueryPipeline&, std::__1::shared_ptr<DB::IBlockInputStream> const&, std::__1::optional<DB::Pipe>)
-DB::InterpreterSelectQuery::execute()
-DB::InterpreterSelectWithUnionQuery::execute()
-DB::executeQueryImpl(char const*, char const*, DB::Context&, bool, DB::QueryProcessingStage::Enum, bool, DB::ReadBuffer*)
-DB::executeQuery(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, DB::Context&, bool, DB::QueryProcessingStage::Enum, bool)
-DB::TCPHandler::runImpl()
-DB::TCPHandler::run()
-Poco::Net::TCPServerConnection::start()
-Poco::Net::TCPServerDispatcher::run()
-Poco::PooledThread::run()
-Poco::ThreadImpl::runnableEntry(void*)
-start_thread
-__clone
+thread_name: clickhouse-serv
+
+thread_id:   5928
+query_id:
+res:         pthread_cond_wait@@GLIBC_2.3.2
+BaseDaemon::waitForTerminationRequest()
+DB::Server::main(std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > > > const&)
+Poco::Util::Application::run()
+DB::Server::run()
+mainEntryClickHouseServer(int, char**)
+main
+__libc_start_main
+_start
 ```
 
 Getting filenames and line numbers in ClickHouse source code:
 
 ``` sql
-WITH arrayMap(x -> addressToLine(x), trace) AS all, arrayFilter(x -> x LIKE '%/dbms/%', all) AS dbms SELECT thread_id, query_id, arrayStringConcat(notEmpty(dbms) ? dbms : all, '\n') AS res FROM system.stack_trace LIMIT 1 \G
+WITH arrayMap(x -> addressToLine(x), trace) AS all, arrayFilter(x -> x LIKE '%/dbms/%', all) AS dbms SELECT thread_name, thread_id, query_id, arrayStringConcat(notEmpty(dbms) ? dbms : all, '\n') AS res FROM system.stack_trace LIMIT 1 \G;
 ```
 
 ``` text
 Row 1:
 ──────
-thread_id: 686
-query_id:  cad353e7-1c29-4b2e-949f-93e597ab7a54
-res:       /lib/x86_64-linux-gnu/libc-2.27.so
-/build/obj-x86_64-linux-gnu/../src/Storages/System/StorageSystemStackTrace.cpp:182
-/build/obj-x86_64-linux-gnu/../contrib/libcxx/include/vector:656
-/build/obj-x86_64-linux-gnu/../src/Interpreters/InterpreterSelectQuery.cpp:1338
-/build/obj-x86_64-linux-gnu/../src/Interpreters/InterpreterSelectQuery.cpp:751
-/build/obj-x86_64-linux-gnu/../contrib/libcxx/include/optional:224
-/build/obj-x86_64-linux-gnu/../src/Interpreters/InterpreterSelectWithUnionQuery.cpp:192
-/build/obj-x86_64-linux-gnu/../src/Interpreters/executeQuery.cpp:384
-/build/obj-x86_64-linux-gnu/../src/Interpreters/executeQuery.cpp:643
-/build/obj-x86_64-linux-gnu/../src/Server/TCPHandler.cpp:251
-/build/obj-x86_64-linux-gnu/../src/Server/TCPHandler.cpp:1197
-/build/obj-x86_64-linux-gnu/../contrib/poco/Net/src/TCPServerConnection.cpp:57
-/build/obj-x86_64-linux-gnu/../contrib/libcxx/include/atomic:856
-/build/obj-x86_64-linux-gnu/../contrib/poco/Foundation/include/Poco/Mutex_POSIX.h:59
-/build/obj-x86_64-linux-gnu/../contrib/poco/Foundation/include/Poco/AutoPtr.h:223
-/lib/x86_64-linux-gnu/libpthread-2.27.so
+thread_name: clickhouse-serv
+
+thread_id:   5928
+query_id:
+res:         /lib/x86_64-linux-gnu/libpthread-2.27.so
+/usr/lib/debug/.build-id/8f/93104326882d1c62c221c34e6bad1b0fefc1e5.debug
+/usr/lib/debug/.build-id/8f/93104326882d1c62c221c34e6bad1b0fefc1e5.debug
+/usr/lib/debug/.build-id/8f/93104326882d1c62c221c34e6bad1b0fefc1e5.debug
+/usr/lib/debug/.build-id/8f/93104326882d1c62c221c34e6bad1b0fefc1e5.debug
+/usr/lib/debug/.build-id/8f/93104326882d1c62c221c34e6bad1b0fefc1e5.debug
+/usr/lib/debug/.build-id/8f/93104326882d1c62c221c34e6bad1b0fefc1e5.debug
 /lib/x86_64-linux-gnu/libc-2.27.so
+/usr/lib/debug/.build-id/8f/93104326882d1c62c221c34e6bad1b0fefc1e5.debug
 ```
 
 **See Also**
@@ -84,6 +73,3 @@ res:       /lib/x86_64-linux-gnu/libc-2.27.so
 -   [system.trace_log](../system-tables/trace_log.md) — Contains stack traces collected by the sampling query profiler.
 -   [arrayMap](../../sql-reference/functions/array-functions.md#array-map) — Description and usage example of the `arrayMap` function.
 -   [arrayFilter](../../sql-reference/functions/array-functions.md#array-filter) — Description and usage example of the `arrayFilter` function.
-
-
-[Original article](https://clickhouse.tech/docs/en/operations/system-tables/stack_trace) <!--hide-->
diff --git a/docs/ru/engines/table-engines/mergetree-family/replacingmergetree.md b/docs/ru/engines/table-engines/mergetree-family/replacingmergetree.md
index ec0b339e8c9..44dcb8b7864 100644
--- a/docs/ru/engines/table-engines/mergetree-family/replacingmergetree.md
+++ b/docs/ru/engines/table-engines/mergetree-family/replacingmergetree.md
@@ -33,7 +33,7 @@ CREATE TABLE [IF NOT EXISTS] [db.]table_name [ON CLUSTER cluster]
 
 **Параметры ReplacingMergeTree**
 
--   `ver` — столбец с версией, тип `UInt*`, `Date` или `DateTime`. Необязательный параметр.
+-   `ver` — столбец с версией. Тип `UInt*`, `Date`, `DateTime` или `DateTime64`. Необязательный параметр.
 
     При слиянии `ReplacingMergeTree` оставляет только строку для каждого уникального ключа сортировки:
 
@@ -65,4 +65,3 @@ CREATE TABLE [IF NOT EXISTS] [db.]table_name [ON CLUSTER cluster]
 -   `ver` — столбец с версией. Необязательный параметр. Описание смотрите выше по тексту.
 
 </details>
-
diff --git a/docs/ru/operations/system-tables/stack_trace.md b/docs/ru/operations/system-tables/stack_trace.md
index 58d0a1c4b6a..78adfe9079f 100644
--- a/docs/ru/operations/system-tables/stack_trace.md
+++ b/docs/ru/operations/system-tables/stack_trace.md
@@ -6,9 +6,10 @@
 
 Столбцы:
 
--   `thread_id` ([UInt64](../../sql-reference/data-types/int-uint.md)) — Идентификатор потока.
--   `query_id` ([String](../../sql-reference/data-types/string.md)) — Идентификатор запроса. Может быть использован для получения подробной информации о выполненном запросе из системной таблицы [query_log](#system_tables-query_log).
--   `trace` ([Array(UInt64)](../../sql-reference/data-types/array.md)) — [Трассировка стека](https://en.wikipedia.org/wiki/Stack_trace). Представляет собой список физических адресов, по которым расположены вызываемые методы.
+-   `thread_name` ([String](../../sql-reference/data-types/string.md)) — имя потока.
+-   `thread_id` ([UInt64](../../sql-reference/data-types/int-uint.md)) — идентификатор потока.
+-   `query_id` ([String](../../sql-reference/data-types/string.md)) — идентификатор запроса. Может быть использован для получения подробной информации о выполненном запросе из системной таблицы [query_log](#system_tables-query_log).
+-   `trace` ([Array(UInt64)](../../sql-reference/data-types/array.md)) — [трассировка стека](https://en.wikipedia.org/wiki/Stack_trace). Представляет собой список физических адресов, по которым расположены вызываемые методы.
 
 **Пример**
 
@@ -21,67 +22,54 @@ SET allow_introspection_functions = 1;
 Получение символов из объектных файлов ClickHouse:
 
 ``` sql
-WITH arrayMap(x -> demangle(addressToSymbol(x)), trace) AS all SELECT thread_id, query_id, arrayStringConcat(all, '\n') AS res FROM system.stack_trace LIMIT 1 \G
+WITH arrayMap(x -> demangle(addressToSymbol(x)), trace) AS all SELECT thread_name, thread_id, query_id, arrayStringConcat(all, '\n') AS res FROM system.stack_trace LIMIT 1 \G;
 ```
 
 ``` text
 Row 1:
 ──────
-thread_id: 686
-query_id:  1a11f70b-626d-47c1-b948-f9c7b206395d
-res:       sigqueue
-DB::StorageSystemStackTrace::fillData(std::__1::vector<COW<DB::IColumn>::mutable_ptr<DB::IColumn>, std::__1::allocator<COW<DB::IColumn>::mutable_ptr<DB::IColumn> > >&, DB::Context const&, DB::SelectQueryInfo const&) const
-DB::IStorageSystemOneBlock<DB::StorageSystemStackTrace>::read(std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > > > const&, DB::SelectQueryInfo const&, DB::Context const&, DB::QueryProcessingStage::Enum, unsigned long, unsigned int)
-DB::InterpreterSelectQuery::executeFetchColumns(DB::QueryProcessingStage::Enum, DB::QueryPipeline&, std::__1::shared_ptr<DB::PrewhereInfo> const&, std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > > > const&)
-DB::InterpreterSelectQuery::executeImpl(DB::QueryPipeline&, std::__1::shared_ptr<DB::IBlockInputStream> const&, std::__1::optional<DB::Pipe>)
-DB::InterpreterSelectQuery::execute()
-DB::InterpreterSelectWithUnionQuery::execute()
-DB::executeQueryImpl(char const*, char const*, DB::Context&, bool, DB::QueryProcessingStage::Enum, bool, DB::ReadBuffer*)
-DB::executeQuery(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, DB::Context&, bool, DB::QueryProcessingStage::Enum, bool)
-DB::TCPHandler::runImpl()
-DB::TCPHandler::run()
-Poco::Net::TCPServerConnection::start()
-Poco::Net::TCPServerDispatcher::run()
-Poco::PooledThread::run()
-Poco::ThreadImpl::runnableEntry(void*)
-start_thread
-__clone
+thread_name: clickhouse-serv
+
+thread_id:   5928
+query_id:
+res:         pthread_cond_wait@@GLIBC_2.3.2
+BaseDaemon::waitForTerminationRequest()
+DB::Server::main(std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > > > const&)
+Poco::Util::Application::run()
+DB::Server::run()
+mainEntryClickHouseServer(int, char**)
+main
+__libc_start_main
+_start
 ```
 
 Получение имен файлов и номеров строк в исходном коде ClickHouse:
 
 ``` sql
-WITH arrayMap(x -> addressToLine(x), trace) AS all, arrayFilter(x -> x LIKE '%/dbms/%', all) AS dbms SELECT thread_id, query_id, arrayStringConcat(notEmpty(dbms) ? dbms : all, '\n') AS res FROM system.stack_trace LIMIT 1 \G
+WITH arrayMap(x -> addressToLine(x), trace) AS all, arrayFilter(x -> x LIKE '%/dbms/%', all) AS dbms SELECT thread_name, thread_id, query_id, arrayStringConcat(notEmpty(dbms) ? dbms : all, '\n') AS res FROM system.stack_trace LIMIT 1 \G;
 ```
 
 ``` text
 Row 1:
 ──────
-thread_id: 686
-query_id:  cad353e7-1c29-4b2e-949f-93e597ab7a54
-res:       /lib/x86_64-linux-gnu/libc-2.27.so
-/build/obj-x86_64-linux-gnu/../src/Storages/System/StorageSystemStackTrace.cpp:182
-/build/obj-x86_64-linux-gnu/../contrib/libcxx/include/vector:656
-/build/obj-x86_64-linux-gnu/../src/Interpreters/InterpreterSelectQuery.cpp:1338
-/build/obj-x86_64-linux-gnu/../src/Interpreters/InterpreterSelectQuery.cpp:751
-/build/obj-x86_64-linux-gnu/../contrib/libcxx/include/optional:224
-/build/obj-x86_64-linux-gnu/../src/Interpreters/InterpreterSelectWithUnionQuery.cpp:192
-/build/obj-x86_64-linux-gnu/../src/Interpreters/executeQuery.cpp:384
-/build/obj-x86_64-linux-gnu/../src/Interpreters/executeQuery.cpp:643
-/build/obj-x86_64-linux-gnu/../src/Server/TCPHandler.cpp:251
-/build/obj-x86_64-linux-gnu/../src/Server/TCPHandler.cpp:1197
-/build/obj-x86_64-linux-gnu/../contrib/poco/Net/src/TCPServerConnection.cpp:57
-/build/obj-x86_64-linux-gnu/../contrib/libcxx/include/atomic:856
-/build/obj-x86_64-linux-gnu/../contrib/poco/Foundation/include/Poco/Mutex_POSIX.h:59
-/build/obj-x86_64-linux-gnu/../contrib/poco/Foundation/include/Poco/AutoPtr.h:223
-/lib/x86_64-linux-gnu/libpthread-2.27.so
+thread_name: clickhouse-serv
+
+thread_id:   5928
+query_id:
+res:         /lib/x86_64-linux-gnu/libpthread-2.27.so
+/usr/lib/debug/.build-id/8f/93104326882d1c62c221c34e6bad1b0fefc1e5.debug
+/usr/lib/debug/.build-id/8f/93104326882d1c62c221c34e6bad1b0fefc1e5.debug
+/usr/lib/debug/.build-id/8f/93104326882d1c62c221c34e6bad1b0fefc1e5.debug
+/usr/lib/debug/.build-id/8f/93104326882d1c62c221c34e6bad1b0fefc1e5.debug
+/usr/lib/debug/.build-id/8f/93104326882d1c62c221c34e6bad1b0fefc1e5.debug
+/usr/lib/debug/.build-id/8f/93104326882d1c62c221c34e6bad1b0fefc1e5.debug
 /lib/x86_64-linux-gnu/libc-2.27.so
+/usr/lib/debug/.build-id/8f/93104326882d1c62c221c34e6bad1b0fefc1e5.debug
 ```
 
-**См. также**
-
--   [Функции интроспекции](../../sql-reference/functions/introspection.md) — Что такое функции интроспекции и как их использовать.
--   [system.trace_log](../../operations/system-tables/trace_log.md#system_tables-trace_log) — Содержит трассировки стека, собранные профилировщиком выборочных запросов.
--   [arrayMap](../../sql-reference/functions/array-functions.md#array-map) — Описание и пример использования функции `arrayMap`.
--   [arrayFilter](../../sql-reference/functions/array-functions.md#array-filter) — Описание и пример использования функции `arrayFilter`.
+**Смотрите также**
 
+-   [Функции интроспекции](../../sql-reference/functions/introspection.md) — что такое функции интроспекции и как их использовать.
+-   [system.trace_log](../../operations/system-tables/trace_log.md#system_tables-trace_log) — содержит трассировки стека, собранные профилировщиком выборочных запросов.
+-   [arrayMap](../../sql-reference/functions/array-functions.md#array-map) — описание и пример использования функции `arrayMap`.
+-   [arrayFilter](../../sql-reference/functions/array-functions.md#array-filter) — описание и пример использования функции `arrayFilter`.