diff --git a/docs/en/development/tests.md b/docs/en/development/tests.md index 6cb36e2049b..269995a1a96 100644 --- a/docs/en/development/tests.md +++ b/docs/en/development/tests.md @@ -14,7 +14,7 @@ Each functional test sends one or multiple queries to the running ClickHouse ser Tests are located in `queries` directory. There are two subdirectories: `stateless` and `stateful`. Stateless tests run queries without any preloaded test data - they often create small synthetic datasets on the fly, within the test itself. Stateful tests require preloaded test data from ClickHouse and it is available to general public. -Each test can be one of two types: `.sql` and `.sh`. `.sql` test is the simple SQL script that is piped to `clickhouse-client`. `.sh` test is a script that is run by itself. SQL tests are generally preferable to `.sh` tests. You should use `.sh` tests only when you have to test some feature that cannot be exercised from pure SQL, such as piping some input data into `clickhouse-client` or testing `clickhouse-local`. +Each test can be one of two types: `.sql` and `.sh`. `.sql` test is the simple SQL script that is piped to `clickhouse-client --multiquery`. `.sh` test is a script that is run by itself. SQL tests are generally preferable to `.sh` tests. You should use `.sh` tests only when you have to test some feature that cannot be exercised from pure SQL, such as piping some input data into `clickhouse-client` or testing `clickhouse-local`. :::note A common mistake when testing data types `DateTime` and `DateTime64` is assuming that the server uses a specific time zone (e.g. "UTC"). This is not the case, time zones in CI test runs @@ -38,7 +38,7 @@ For more options, see `tests/clickhouse-test --help`. You can simply run all tes ### Adding a New Test -To add new test, create a `.sql` or `.sh` file in `queries/0_stateless` directory, check it manually and then generate `.reference` file in the following way: `clickhouse-client < 00000_test.sql > 00000_test.reference` or `./00000_test.sh > ./00000_test.reference`. +To add new test, create a `.sql` or `.sh` file in `queries/0_stateless` directory, check it manually and then generate `.reference` file in the following way: `clickhouse-client --multiquery < 00000_test.sql > 00000_test.reference` or `./00000_test.sh > ./00000_test.reference`. Tests should use (create, drop, etc) only tables in `test` database that is assumed to be created beforehand; also tests can use temporary tables. diff --git a/docs/en/sql-reference/statements/alter/statistics.md b/docs/en/sql-reference/statements/alter/statistics.md index 7a1774a01b5..6880cef0e5c 100644 --- a/docs/en/sql-reference/statements/alter/statistics.md +++ b/docs/en/sql-reference/statements/alter/statistics.md @@ -8,28 +8,26 @@ sidebar_label: STATISTICS The following operations are available: -- `ALTER TABLE [db].table ADD STATISTICS [IF NOT EXISTS] (column list) TYPE (type list)` - Adds statistic description to tables metadata. +- `ALTER TABLE [db].table ADD STATISTICS (columns list) TYPE (type list)` - Adds statistic description to tables metadata. -- `ALTER TABLE [db].table MODIFY STATISTICS (column list) TYPE (type list)` - Modifies statistic description to tables metadata. +- `ALTER TABLE [db].table MODIFY STATISTICS (columns list) TYPE (type list)` - Modifies statistic description to tables metadata. -- `ALTER TABLE [db].table DROP STATISTICS [IF EXISTS] (column list)` - Removes statistics from the metadata of the specified columns and deletes all statistics objects in all parts for the specified columns. +- `ALTER TABLE [db].table DROP STATISTICS (columns list)` - Removes statistics from the metadata of the specified columns and deletes all statistics objects in all parts for the specified columns. -- `ALTER TABLE [db].table CLEAR STATISTICS [IF EXISTS] (column list)` - Deletes all statistics objects in all parts for the specified columns. Statistics objects can be rebuild using `ALTER TABLE MATERIALIZE STATISTICS`. +- `ALTER TABLE [db].table CLEAR STATISTICS (columns list)` - Deletes all statistics objects in all parts for the specified columns. Statistics objects can be rebuild using `ALTER TABLE MATERIALIZE STATISTICS`. -- `ALTER TABLE [db.]table MATERIALIZE STATISTICS [IF EXISTS] (column list)` - Rebuilds the statistic for columns. Implemented as a [mutation](../../../sql-reference/statements/alter/index.md#mutations). +- `ALTER TABLE [db.]table MATERIALIZE STATISTICS (columns list)` - Rebuilds the statistic for columns. Implemented as a [mutation](../../../sql-reference/statements/alter/index.md#mutations). The first two commands are lightweight in a sense that they only change metadata or remove files. Also, they are replicated, syncing statistics metadata via ZooKeeper. -## Example: - -Adding two statistics types to two columns: +There is an example adding two statistics types to two columns: ``` ALTER TABLE t1 MODIFY STATISTICS c, d TYPE TDigest, Uniq; ``` :::note -Statistic are supported only for [`*MergeTree`](../../../engines/table-engines/mergetree-family/mergetree.md) engine tables (including [replicated](../../../engines/table-engines/mergetree-family/replication.md) variants). +Statistic manipulation is supported only for tables with [`*MergeTree`](../../../engines/table-engines/mergetree-family/mergetree.md) engine (including [replicated](../../../engines/table-engines/mergetree-family/replication.md) variants). ::: diff --git a/src/Storages/MergeTree/MergeTreeData.cpp b/src/Storages/MergeTree/MergeTreeData.cpp index c7101021f02..625b1281c61 100644 --- a/src/Storages/MergeTree/MergeTreeData.cpp +++ b/src/Storages/MergeTree/MergeTreeData.cpp @@ -3517,7 +3517,7 @@ void MergeTreeData::checkAlterIsPossible(const AlterCommands & commands, Context const auto & new_column = new_metadata.getColumns().get(command.column_name); if (!old_column.type->equals(*new_column.type)) throw Exception(ErrorCodes::ALTER_OF_COLUMN_IS_FORBIDDEN, - "ALTER types of column {} with statistics is not safe " + "ALTER types of column {} with statistics is not not safe " "because it can change the representation of statistics", backQuoteIfNeed(command.column_name)); } diff --git a/tests/queries/0_stateless/02864_statistics_count_min_sketch.reference b/tests/queries/0_stateless/02864_statistics_count_min_sketch.reference new file mode 100644 index 00000000000..02c41656a36 --- /dev/null +++ b/tests/queries/0_stateless/02864_statistics_count_min_sketch.reference @@ -0,0 +1,14 @@ +CREATE TABLE default.tab\n(\n `a` String,\n `b` UInt64,\n `c` Int64,\n `pk` String\n)\nENGINE = MergeTree\nORDER BY pk\nSETTINGS min_bytes_for_wide_part = 0, index_granularity = 8192 +Test statistics count_min: + Prewhere info + Prewhere filter + Prewhere filter column: and(equals(a, \'0\'), equals(b, 0), equals(c, 0)) (removed) +Test statistics multi-types: + Prewhere info + Prewhere filter + Prewhere filter column: and(equals(a, \'0\'), less(c, -90), greater(b, 900)) (removed) + Prewhere info + Prewhere filter + Prewhere filter column: and(equals(a, \'10000\'), equals(b, 0), less(c, 0)) (removed) +Test LowCardinality and Nullable data type: +tab2 diff --git a/tests/queries/0_stateless/02864_statistics_count_min_sketch.sql b/tests/queries/0_stateless/02864_statistics_count_min_sketch.sql new file mode 100644 index 00000000000..c730aa7b4a7 --- /dev/null +++ b/tests/queries/0_stateless/02864_statistics_count_min_sketch.sql @@ -0,0 +1,70 @@ +-- Tags: no-fasttest + +DROP TABLE IF EXISTS tab SYNC; + +SET allow_experimental_statistics = 1; +SET allow_statistics_optimize = 1; +SET allow_suspicious_low_cardinality_types=1; +SET mutations_sync = 2; + +CREATE TABLE tab +( + a String, + b UInt64, + c Int64, + pk String, +) Engine = MergeTree() ORDER BY pk +SETTINGS min_bytes_for_wide_part = 0; + +SHOW CREATE TABLE tab; + +INSERT INTO tab select toString(number % 10000), number % 1000, -(number % 100), generateUUIDv4() FROM system.numbers LIMIT 10000; + +SELECT 'Test statistics count_min:'; + +ALTER TABLE tab ADD STATISTICS a TYPE count_min; +ALTER TABLE tab ADD STATISTICS b TYPE count_min; +ALTER TABLE tab ADD STATISTICS c TYPE count_min; +ALTER TABLE tab MATERIALIZE STATISTICS a, b, c; + +SELECT replaceRegexpAll(explain, '__table1.|_UInt8|_Int8|_UInt16|_String', '') +FROM (EXPLAIN actions=1 SELECT count(*) FROM tab WHERE c = 0/*100*/ and b = 0/*10*/ and a = '0'/*1*/) xx +WHERE explain LIKE '%Prewhere%' OR explain LIKE '%Filter column%'; + +ALTER TABLE tab DROP STATISTICS a, b, c; + + +SELECT 'Test statistics multi-types:'; + +ALTER TABLE tab ADD STATISTICS a TYPE count_min; +ALTER TABLE tab ADD STATISTICS b TYPE count_min, uniq, tdigest; +ALTER TABLE tab ADD STATISTICS c TYPE count_min, uniq, tdigest; +ALTER TABLE tab MATERIALIZE STATISTICS a, b, c; + +SELECT replaceRegexpAll(explain, '__table1.|_UInt8|_Int8|_UInt16|_String', '') +FROM (EXPLAIN actions=1 SELECT count(*) FROM tab WHERE c < -90/*900*/ and b > 900/*990*/ and a = '0'/*1*/) +WHERE explain LIKE '%Prewhere%' OR explain LIKE '%Filter column%'; + +SELECT replaceRegexpAll(explain, '__table1.|_UInt8|_Int8|_UInt16|_String', '') +FROM (EXPLAIN actions=1 SELECT count(*) FROM tab WHERE c < 0/*9900*/ and b = 0/*10*/ and a = '10000'/*0*/) +WHERE explain LIKE '%Prewhere%' OR explain LIKE '%Filter column%'; + +ALTER TABLE tab DROP STATISTICS a, b, c; + +DROP TABLE IF EXISTS tab SYNC; + + +SELECT 'Test LowCardinality and Nullable data type:'; +DROP TABLE IF EXISTS tab2 SYNC; +SET allow_suspicious_low_cardinality_types=1; +CREATE TABLE tab2 +( + a LowCardinality(Int64) STATISTICS(count_min), + b Nullable(Int64) STATISTICS(count_min), + c LowCardinality(Nullable(Int64)) STATISTICS(count_min), + pk String, +) Engine = MergeTree() ORDER BY pk; + +select name from system.tables where name = 'tab2' and database = currentDatabase(); + +DROP TABLE IF EXISTS tab2 SYNC; diff --git a/tests/queries/0_stateless/02864_statistics_ddl.reference b/tests/queries/0_stateless/02864_statistics_ddl.reference index 0e453b0ee8a..a7ff5caa0b0 100644 --- a/tests/queries/0_stateless/02864_statistics_ddl.reference +++ b/tests/queries/0_stateless/02864_statistics_ddl.reference @@ -1,6 +1,31 @@ -CREATE TABLE default.tab\n(\n `f64` Float64,\n `f64_tdigest` Float64 STATISTICS(tdigest),\n `f32` Float32,\n `s` String,\n `a` Array(Float64)\n)\nENGINE = MergeTree\nORDER BY tuple()\nSETTINGS index_granularity = 8192 -CREATE TABLE default.tab\n(\n `f64` Float64 STATISTICS(tdigest, uniq),\n `f64_tdigest` Float64 STATISTICS(tdigest),\n `f32` Float32 STATISTICS(tdigest, uniq),\n `s` String,\n `a` Array(Float64)\n)\nENGINE = MergeTree\nORDER BY tuple()\nSETTINGS index_granularity = 8192 -CREATE TABLE default.tab\n(\n `f64` Float64 STATISTICS(tdigest, uniq),\n `f64_tdigest` Float64 STATISTICS(tdigest),\n `f32` Float32 STATISTICS(tdigest, uniq),\n `s` String,\n `a` Array(Float64)\n)\nENGINE = MergeTree\nORDER BY tuple()\nSETTINGS index_granularity = 8192 -CREATE TABLE default.tab\n(\n `f64` Float64 STATISTICS(tdigest, uniq),\n `f64_tdigest` Float64 STATISTICS(tdigest),\n `f32` Float32 STATISTICS(tdigest, uniq),\n `s` String,\n `a` Array(Float64)\n)\nENGINE = MergeTree\nORDER BY tuple()\nSETTINGS index_granularity = 8192 -CREATE TABLE default.tab\n(\n `f64` Float64 STATISTICS(tdigest, uniq),\n `f64_tdigest` Float64 STATISTICS(tdigest),\n `f32` Float32 STATISTICS(tdigest, uniq),\n `s` String,\n `a` Array(Float64)\n)\nENGINE = MergeTree\nORDER BY tuple()\nSETTINGS index_granularity = 8192 -CREATE TABLE default.tab\n(\n `f64` Float64,\n `f64_tdigest` Float64 STATISTICS(tdigest),\n `f32` Float32,\n `s` String,\n `a` Array(Float64)\n)\nENGINE = MergeTree\nORDER BY tuple()\nSETTINGS index_granularity = 8192 +CREATE TABLE default.tab\n(\n `a` Float64 STATISTICS(tdigest),\n `b` Int64 STATISTICS(tdigest),\n `pk` String\n)\nENGINE = MergeTree\nORDER BY pk\nSETTINGS min_bytes_for_wide_part = 0, index_granularity = 8192 +After insert + Prewhere info + Prewhere filter + Prewhere filter column: and(less(a, 10), less(b, 10)) (removed) +10 +0 +After drop statistic + Prewhere info + Prewhere filter + Prewhere filter column: and(less(b, 10), less(a, 10)) (removed) +10 +CREATE TABLE default.tab\n(\n `a` Float64,\n `b` Int64,\n `pk` String\n)\nENGINE = MergeTree\nORDER BY pk\nSETTINGS min_bytes_for_wide_part = 0, index_granularity = 8192 +After add statistic +CREATE TABLE default.tab\n(\n `a` Float64 STATISTICS(tdigest),\n `b` Int64 STATISTICS(tdigest),\n `pk` String\n)\nENGINE = MergeTree\nORDER BY pk\nSETTINGS min_bytes_for_wide_part = 0, index_granularity = 8192 +After materialize statistic + Prewhere info + Prewhere filter + Prewhere filter column: and(less(a, 10), less(b, 10)) (removed) +20 +After merge + Prewhere info + Prewhere filter + Prewhere filter column: and(less(a, 10), less(b, 10)) (removed) +20 +CREATE TABLE default.tab\n(\n `a` Float64 STATISTICS(tdigest),\n `c` Int64 STATISTICS(tdigest),\n `pk` String\n)\nENGINE = MergeTree\nORDER BY pk\nSETTINGS min_bytes_for_wide_part = 0, index_granularity = 8192 +After rename + Prewhere info + Prewhere filter + Prewhere filter column: and(less(a, 10), less(c, 10)) (removed) +20 diff --git a/tests/queries/0_stateless/02864_statistics_ddl.sql b/tests/queries/0_stateless/02864_statistics_ddl.sql index 32b56a842b7..fe612efe2ac 100644 --- a/tests/queries/0_stateless/02864_statistics_ddl.sql +++ b/tests/queries/0_stateless/02864_statistics_ddl.sql @@ -1,195 +1,59 @@ --- Tags: no-fasttest --- no-fasttest: 'count_min' sketches need a 3rd party library - --- Tests that DDL statements which create / drop / materialize statistics - -SET mutations_sync = 1; +-- Tests that various DDL statements create/drop/materialize statistics DROP TABLE IF EXISTS tab; --- Error case: Can't create statistics when allow_experimental_statistics = 0 -CREATE TABLE tab (col Float64 STATISTICS(tdigest)) Engine = MergeTree() ORDER BY tuple(); -- { serverError INCORRECT_QUERY } - SET allow_experimental_statistics = 1; - --- Error case: Unknown statistics types are rejected -CREATE TABLE tab (col Float64 STATISTICS(no_statistics_type)) Engine = MergeTree() ORDER BY tuple(); -- { serverError INCORRECT_QUERY } - --- Error case: The same statistics type can't exist more than once on a column -CREATE TABLE tab (col Float64 STATISTICS(tdigest, tdigest)) Engine = MergeTree() ORDER BY tuple(); -- { serverError INCORRECT_QUERY } - -SET allow_suspicious_low_cardinality_types = 1; - --- Statistics can only be created on columns of specific data types (depending on the statistics kind), (*) - --- tdigest requires data_type.isValueRepresentedByInteger --- These types work: -CREATE TABLE tab (col UInt8 STATISTICS(tdigest)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col UInt256 STATISTICS(tdigest)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col Float32 STATISTICS(tdigest)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col Decimal32(3) STATISTICS(tdigest)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col Date STATISTICS(tdigest)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col Date32 STATISTICS(tdigest)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col DateTime STATISTICS(tdigest)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col DateTime64 STATISTICS(tdigest)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col Enum('hello', 'world') STATISTICS(tdigest)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col IPv4 STATISTICS(tdigest)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col Nullable(UInt8) STATISTICS(tdigest)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col LowCardinality(UInt8) STATISTICS(tdigest)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col LowCardinality(Nullable(UInt8)) STATISTICS(tdigest)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; --- These types don't work: -CREATE TABLE tab (col String STATISTICS(tdigest)) Engine = MergeTree() ORDER BY tuple(); -- { serverError ILLEGAL_STATISTICS } -CREATE TABLE tab (col FixedString(1) STATISTICS(tdigest)) Engine = MergeTree() ORDER BY tuple(); -- { serverError ILLEGAL_STATISTICS } -CREATE TABLE tab (col Array(Float64) STATISTICS(tdigest)) Engine = MergeTree() ORDER BY tuple(); -- { serverError ILLEGAL_STATISTICS } -CREATE TABLE tab (col Tuple(Float64, Float64) STATISTICS(tdigest)) Engine = MergeTree() ORDER BY tuple(); -- { serverError ILLEGAL_STATISTICS } -CREATE TABLE tab (col Map(UInt64, UInt64) STATISTICS(tdigest)) Engine = MergeTree() ORDER BY tuple(); -- { serverError ILLEGAL_STATISTICS } -CREATE TABLE tab (col UUID STATISTICS(tdigest)) Engine = MergeTree() ORDER BY tuple(); -- { serverError ILLEGAL_STATISTICS } -CREATE TABLE tab (col IPv6 STATISTICS(tdigest)) Engine = MergeTree() ORDER BY tuple(); -- { serverError ILLEGAL_STATISTICS } - --- uniq requires data_type.isValueRepresentedByInteger --- These types work: -CREATE TABLE tab (col UInt8 STATISTICS(uniq)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col UInt256 STATISTICS(uniq)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col Float32 STATISTICS(uniq)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col Decimal32(3) STATISTICS(uniq)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col Date STATISTICS(uniq)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col Date32 STATISTICS(uniq)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col DateTime STATISTICS(uniq)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col DateTime64 STATISTICS(uniq)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col Enum('hello', 'world') STATISTICS(uniq)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col IPv4 STATISTICS(uniq)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col Nullable(UInt8) STATISTICS(uniq)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col LowCardinality(UInt8) STATISTICS(uniq)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col LowCardinality(Nullable(UInt8)) STATISTICS(uniq)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; --- These types don't work: -CREATE TABLE tab (col String STATISTICS(uniq)) Engine = MergeTree() ORDER BY tuple(); -- { serverError ILLEGAL_STATISTICS } -CREATE TABLE tab (col FixedString(1) STATISTICS(uniq)) Engine = MergeTree() ORDER BY tuple(); -- { serverError ILLEGAL_STATISTICS } -CREATE TABLE tab (col Array(Float64) STATISTICS(uniq)) Engine = MergeTree() ORDER BY tuple(); -- { serverError ILLEGAL_STATISTICS } -CREATE TABLE tab (col Tuple(Float64, Float64) STATISTICS(uniq)) Engine = MergeTree() ORDER BY tuple(); -- { serverError ILLEGAL_STATISTICS } -CREATE TABLE tab (col Map(UInt64, UInt64) STATISTICS(uniq)) Engine = MergeTree() ORDER BY tuple(); -- { serverError ILLEGAL_STATISTICS } -CREATE TABLE tab (col UUID STATISTICS(uniq)) Engine = MergeTree() ORDER BY tuple(); -- { serverError ILLEGAL_STATISTICS } -CREATE TABLE tab (col IPv6 STATISTICS(uniq)) Engine = MergeTree() ORDER BY tuple(); -- { serverError ILLEGAL_STATISTICS } - --- count_min requires data_type.isValueRepresentedByInteger or data_type = (Fixed)String --- These types work: -CREATE TABLE tab (col UInt8 STATISTICS(count_min)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col UInt256 STATISTICS(count_min)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col Float32 STATISTICS(count_min)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col Decimal32(3) STATISTICS(count_min)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col Date STATISTICS(count_min)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col Date32 STATISTICS(count_min)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col DateTime STATISTICS(count_min)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col DateTime64 STATISTICS(count_min)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col Enum('hello', 'world') STATISTICS(count_min)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col IPv4 STATISTICS(count_min)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col Nullable(UInt8) STATISTICS(count_min)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col LowCardinality(UInt8) STATISTICS(count_min)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col LowCardinality(Nullable(UInt8)) STATISTICS(count_min)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col String STATISTICS(count_min)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; -CREATE TABLE tab (col FixedString(1) STATISTICS(count_min)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab; --- These types don't work: -CREATE TABLE tab (col Array(Float64) STATISTICS(count_min)) Engine = MergeTree() ORDER BY tuple(); -- { serverError ILLEGAL_STATISTICS } -CREATE TABLE tab (col Tuple(Float64, Float64) STATISTICS(count_min)) Engine = MergeTree() ORDER BY tuple(); -- { serverError ILLEGAL_STATISTICS } -CREATE TABLE tab (col Map(UInt64, UInt64) STATISTICS(count_min)) Engine = MergeTree() ORDER BY tuple(); -- { serverError ILLEGAL_STATISTICS } -CREATE TABLE tab (col UUID STATISTICS(count_min)) Engine = MergeTree() ORDER BY tuple(); -- { serverError ILLEGAL_STATISTICS } -CREATE TABLE tab (col IPv6 STATISTICS(count_min)) Engine = MergeTree() ORDER BY tuple(); -- { serverError ILLEGAL_STATISTICS } - --- CREATE TABLE was easy, ALTER is more fun +SET allow_statistics_optimize = 1; CREATE TABLE tab ( - f64 Float64, - f64_tdigest Float64 STATISTICS(tdigest), - f32 Float32, - s String, - a Array(Float64) -) -Engine = MergeTree() -ORDER BY tuple(); + a Float64 STATISTICS(tdigest), + b Int64 STATISTICS(tdigest), + pk String, +) Engine = MergeTree() ORDER BY pk +SETTINGS min_bytes_for_wide_part = 0; --- Error case: Unknown statistics types are rejected --- (relevant for ADD and MODIFY) -ALTER TABLE tab ADD STATISTICS f64 TYPE no_statistics_type; -- { serverError INCORRECT_QUERY } -ALTER TABLE tab ADD STATISTICS IF NOT EXISTS f64 TYPE no_statistics_type; -- { serverError INCORRECT_QUERY } -ALTER TABLE tab MODIFY STATISTICS f64 TYPE no_statistics_type; -- { serverError INCORRECT_QUERY } --- for some reason, ALTER TABLE tab MODIFY STATISTICS IF EXISTS is not supported - --- Error case: The same statistics type can't exist more than once on a column --- (relevant for ADD and MODIFY) --- Create the same statistics object twice -ALTER TABLE tab ADD STATISTICS f64 TYPE tdigest, tdigest; -- { serverError INCORRECT_QUERY } -ALTER TABLE tab ADD STATISTICS IF NOT EXISTS f64 TYPE tdigest, tdigest; -- { serverError INCORRECT_QUERY } -ALTER TABLE tab MODIFY STATISTICS f64 TYPE tdigest, tdigest; -- { serverError INCORRECT_QUERY } --- Create an statistics which exists already -ALTER TABLE tab ADD STATISTICS f64_tdigest TYPE tdigest; -- { serverError ILLEGAL_STATISTICS } -ALTER TABLE tab ADD STATISTICS IF NOT EXISTS f64_tdigest TYPE tdigest; -- no-op -ALTER TABLE tab MODIFY STATISTICS f64_tdigest TYPE tdigest; -- no-op - --- Error case: Column does not exist --- (relevant for ADD, MODIFY, DROP, CLEAR, and MATERIALIZE) --- Note that the results are unfortunately quite inconsistent ... -ALTER TABLE tab ADD STATISTICS no_such_column TYPE tdigest; -- { serverError ILLEGAL_STATISTICS } -ALTER TABLE tab ADD STATISTICS IF NOT EXISTS no_such_column TYPE tdigest; -- { serverError ILLEGAL_STATISTICS } -ALTER TABLE tab MODIFY STATISTICS no_such_column TYPE tdigest; -- { serverError ILLEGAL_STATISTICS } -ALTER TABLE tab DROP STATISTICS no_such_column; -- { serverError ILLEGAL_STATISTICS } -ALTER TABLE tab DROP STATISTICS IF EXISTS no_such_column; -- no-op -ALTER TABLE tab CLEAR STATISTICS no_such_column; -- { serverError ILLEGAL_STATISTICS } -ALTER TABLE tab CLEAR STATISTICS IF EXISTS no_such_column; -- no-op -ALTER TABLE tab MATERIALIZE STATISTICS no_such_column; -- { serverError ILLEGAL_STATISTICS } -ALTER TABLE tab MATERIALIZE STATISTICS IF EXISTS no_such_column; -- { serverError ILLEGAL_STATISTICS } - --- Error case: Column exists but has no statistics --- (relevant for MODIFY, DROP, CLEAR, and MATERIALIZE) --- Note that the results are unfortunately quite inconsistent ... -ALTER TABLE tab MODIFY STATISTICS s TYPE tdigest; -- { serverError ILLEGAL_STATISTICS } -ALTER TABLE tab DROP STATISTICS s; -- { serverError ILLEGAL_STATISTICS } -ALTER TABLE tab DROP STATISTICS IF EXISTS s; -- no-op -ALTER TABLE tab CLEAR STATISTICS s; -- { serverError ILLEGAL_STATISTICS } -ALTER TABLE tab CLEAR STATISTICS IF EXISTS s; -- no-op -ALTER TABLE tab MATERIALIZE STATISTICS s; -- { serverError ILLEGAL_STATISTICS } -ALTER TABLE tab MATERIALIZE STATISTICS IF EXISTS s; -- { serverError ILLEGAL_STATISTICS } - --- We don't check systematically that that statistics can only be created via ALTER ADD STATISTICS on columns of specific data types (the --- internal type validation code is tested already above, (*)). Only do a rudimentary check for each statistics type with a data type that --- works and one that doesn't work. --- tdigest --- Works: -ALTER TABLE tab ADD STATISTICS f64 TYPE tdigest; ALTER TABLE tab DROP STATISTICS f64; -ALTER TABLE tab MODIFY STATISTICS f64 TYPE tdigest; ALTER TABLE tab DROP STATISTICS f64; --- Doesn't work: -ALTER TABLE tab ADD STATISTICS a TYPE tdigest; -- { serverError ILLEGAL_STATISTICS } -ALTER TABLE tab MODIFY STATISTICS a TYPE tdigest; -- { serverError ILLEGAL_STATISTICS } --- uniq --- Works: -ALTER TABLE tab ADD STATISTICS f64 TYPE uniq; ALTER TABLE tab DROP STATISTICS f64; -ALTER TABLE tab MODIFY STATISTICS f64 TYPE count_min; ALTER TABLE tab DROP STATISTICS f64; --- Doesn't work: -ALTER TABLE tab ADD STATISTICS a TYPE uniq; -- { serverError ILLEGAL_STATISTICS } -ALTER TABLE tab MODIFY STATISTICS a TYPE uniq; -- { serverError ILLEGAL_STATISTICS } --- count_min --- Works: -ALTER TABLE tab ADD STATISTICS f64 TYPE count_min; ALTER TABLE tab DROP STATISTICS f64; -ALTER TABLE tab MODIFY STATISTICS f64 TYPE count_min; ALTER TABLE tab DROP STATISTICS f64; --- Doesn't work: -ALTER TABLE tab ADD STATISTICS a TYPE count_min; -- { serverError ILLEGAL_STATISTICS } -ALTER TABLE tab MODIFY STATISTICS a TYPE count_min; -- { serverError ILLEGAL_STATISTICS } - --- Any data type changes on columns with statistics are disallowed, for simplicity even if the new data type is compatible with all existing --- statistics objects (e.g. tdigest can be created on Float64 and UInt64) -ALTER TABLE tab MODIFY COLUMN f64_tdigest UInt64; -- { serverError ALTER_OF_COLUMN_IS_FORBIDDEN } - --- Finally, do a full-circle test of a good case. Print table definition after each step. --- Intentionally specifying _two_ columns and _two_ statistics types to have that also tested. -SHOW CREATE TABLE tab; -ALTER TABLE tab ADD STATISTICS f64, f32 TYPE tdigest, uniq; -SHOW CREATE TABLE tab; -ALTER TABLE tab MODIFY STATISTICS f64, f32 TYPE tdigest, uniq; -SHOW CREATE TABLE tab; -ALTER TABLE tab CLEAR STATISTICS f64, f32; -SHOW CREATE TABLE tab; -ALTER TABLE tab MATERIALIZE STATISTICS f64, f32; -SHOW CREATE TABLE tab; -ALTER TABLE tab DROP STATISTICS f64, f32; SHOW CREATE TABLE tab; -DROP TABLE tab; +INSERT INTO tab select number, -number, generateUUIDv4() FROM system.numbers LIMIT 10000; + +SELECT 'After insert'; +SELECT replaceRegexpAll(explain, '__table1\.|_UInt8', '') FROM (EXPLAIN actions=1 SELECT count(*) FROM tab WHERE b < 10 and a < 10) WHERE explain LIKE '%Prewhere%' OR explain LIKE '%Filter column%'; +SELECT count(*) FROM tab WHERE b < 10 and a < 10; +SELECT count(*) FROM tab WHERE b < NULL and a < '10'; + +ALTER TABLE tab DROP STATISTICS a, b; + +SELECT 'After drop statistic'; +SELECT replaceRegexpAll(explain, '__table1\.|_UInt8', '') FROM (EXPLAIN actions=1 SELECT count(*) FROM tab WHERE b < 10 and a < 10) WHERE explain LIKE '%Prewhere%' OR explain LIKE '%Filter column%'; +SELECT count(*) FROM tab WHERE b < 10 and a < 10; + +SHOW CREATE TABLE tab; + +ALTER TABLE tab ADD STATISTICS a, b TYPE tdigest; + +SELECT 'After add statistic'; + +SHOW CREATE TABLE tab; + +ALTER TABLE tab MATERIALIZE STATISTICS a, b; +INSERT INTO tab select number, -number, generateUUIDv4() FROM system.numbers LIMIT 10000; + +SELECT 'After materialize statistic'; +SELECT replaceRegexpAll(explain, '__table1\.|_UInt8', '') FROM (EXPLAIN actions=1 SELECT count(*) FROM tab WHERE b < 10 and a < 10) WHERE explain LIKE '%Prewhere%' OR explain LIKE '%Filter column%'; +SELECT count(*) FROM tab WHERE b < 10 and a < 10; + +OPTIMIZE TABLE tab FINAL; + +SELECT 'After merge'; +SELECT replaceRegexpAll(explain, '__table1\.|_UInt8', '') FROM (EXPLAIN actions=1 SELECT count(*) FROM tab WHERE b < 10 and a < 10) WHERE explain LIKE '%Prewhere%' OR explain LIKE '%Filter column%'; +SELECT count(*) FROM tab WHERE b < 10 and a < 10; + +ALTER TABLE tab RENAME COLUMN b TO c; +SHOW CREATE TABLE tab; + +SELECT 'After rename'; +SELECT replaceRegexpAll(explain, '__table1\.|_UInt8', '') FROM (EXPLAIN actions=1 SELECT count(*) FROM tab WHERE c < 10 and a < 10) WHERE explain LIKE '%Prewhere%' OR explain LIKE '%Filter column%'; +SELECT count(*) FROM tab WHERE c < 10 and a < 10; + +DROP TABLE IF EXISTS tab; diff --git a/tests/queries/0_stateless/02864_statistics_delayed_materialization_in_merge.reference b/tests/queries/0_stateless/02864_statistics_delayed_materialization_in_merge.reference deleted file mode 100644 index eb5e685597c..00000000000 --- a/tests/queries/0_stateless/02864_statistics_delayed_materialization_in_merge.reference +++ /dev/null @@ -1,12 +0,0 @@ -After insert - Prewhere info - Prewhere filter - Prewhere filter column: and(less(b, 10_UInt8), less(a, 10_UInt8)) (removed) -After merge - Prewhere info - Prewhere filter - Prewhere filter column: and(less(a, 10_UInt8), less(b, 10_UInt8)) (removed) -After truncate, insert, and materialize - Prewhere info - Prewhere filter - Prewhere filter column: and(less(a, 10_UInt8), less(b, 10_UInt8)) (removed) diff --git a/tests/queries/0_stateless/02864_statistics_delayed_materialization_in_merge.sql b/tests/queries/0_stateless/02864_statistics_delayed_materialization_in_merge.sql deleted file mode 100644 index d469a4c2036..00000000000 --- a/tests/queries/0_stateless/02864_statistics_delayed_materialization_in_merge.sql +++ /dev/null @@ -1,36 +0,0 @@ --- Tests delayed materialization of statistics in merge instead of during insert (setting 'materialize_statistics_on_insert = 0'). --- (The concrete statistics type, column data type and predicate type don't matter) - --- Checks by the predicate evaluation order in EXPLAIN. This is quite fragile, a better approach would be helpful (maybe 'send_logs_level'?) - -DROP TABLE IF EXISTS tab; - -SET allow_experimental_statistics = 1; -SET allow_statistics_optimize = 1; -SET enable_analyzer = 1; - -SET materialize_statistics_on_insert = 0; - -CREATE TABLE tab -( - a Int64 STATISTICS(tdigest), - b Int16 STATISTICS(tdigest), -) ENGINE = MergeTree() ORDER BY tuple() -SETTINGS min_bytes_for_wide_part = 0, enable_vertical_merge_algorithm = 0; -- TODO: there is a bug in vertical merge with statistics. - -INSERT INTO tab SELECT number, -number FROM system.numbers LIMIT 10000; -SELECT 'After insert'; -SELECT replaceRegexpAll(explain, '__table1\.', '') FROM (EXPLAIN actions=1 SELECT count(*) FROM tab WHERE b < 10 and a < 10) WHERE explain LIKE '%Prewhere%'; -- checks b first, then a (statistics not used) - -OPTIMIZE TABLE tab FINAL; -SELECT 'After merge'; -SELECT replaceRegexpAll(explain, '__table1\.', '') FROM (EXPLAIN actions=1 SELECT count(*) FROM tab WHERE b < 10 and a < 10) WHERE explain LIKE '%Prewhere%'; -- checks a first, then b (statistics used) - -TRUNCATE TABLE tab; -SET mutations_sync = 2; -INSERT INTO tab SELECT number, -number FROM system.numbers LIMIT 10000; -ALTER TABLE tab MATERIALIZE STATISTICS a, b; -SELECT 'After truncate, insert, and materialize'; -SELECT replaceRegexpAll(explain, '__table1\.', '') FROM (EXPLAIN actions=1 SELECT count(*) FROM tab WHERE b < 10 and a < 10) WHERE explain LIKE '%Prewhere%'; -- checks a first, then b (statistics used) - -DROP TABLE tab; diff --git a/tests/queries/0_stateless/02864_statistics_exception.reference b/tests/queries/0_stateless/02864_statistics_exception.reference new file mode 100644 index 00000000000..e69de29bb2d diff --git a/tests/queries/0_stateless/02864_statistics_exception.sql b/tests/queries/0_stateless/02864_statistics_exception.sql new file mode 100644 index 00000000000..289ffee6600 --- /dev/null +++ b/tests/queries/0_stateless/02864_statistics_exception.sql @@ -0,0 +1,55 @@ +-- Tests creating/dropping/materializing statistics produces the right exceptions. + +DROP TABLE IF EXISTS tab; + +-- Can't create statistics when allow_experimental_statistics = 0 +CREATE TABLE tab +( + a Float64 STATISTICS(tdigest) +) Engine = MergeTree() ORDER BY tuple(); -- { serverError INCORRECT_QUERY } + +SET allow_experimental_statistics = 1; + +-- The same type of statistics can't exist more than once on a column +CREATE TABLE tab +( + a Float64 STATISTICS(tdigest, tdigest) +) Engine = MergeTree() ORDER BY tuple(); -- { serverError INCORRECT_QUERY } + +-- Unknown statistics types are rejected +CREATE TABLE tab +( + a Float64 STATISTICS(no_statistics_type) +) Engine = MergeTree() ORDER BY tuple(); -- { serverError INCORRECT_QUERY } + +-- tDigest statistics can only be created on numeric columns +CREATE TABLE tab +( + a String STATISTICS(tdigest), +) Engine = MergeTree() ORDER BY tuple(); -- { serverError ILLEGAL_STATISTICS } + +CREATE TABLE tab +( + a Float64, + b String +) Engine = MergeTree() ORDER BY tuple(); + +ALTER TABLE tab ADD STATISTICS a TYPE no_statistics_type; -- { serverError INCORRECT_QUERY } +ALTER TABLE tab ADD STATISTICS a TYPE tdigest; +ALTER TABLE tab ADD STATISTICS IF NOT EXISTS a TYPE tdigest; +ALTER TABLE tab ADD STATISTICS a TYPE tdigest; -- { serverError ILLEGAL_STATISTICS } +ALTER TABLE tab MODIFY STATISTICS a TYPE tdigest; +-- Statistics can be created only on integer columns +ALTER TABLE tab ADD STATISTICS b TYPE tdigest; -- { serverError ILLEGAL_STATISTICS } +ALTER TABLE tab DROP STATISTICS b; -- { serverError ILLEGAL_STATISTICS } +ALTER TABLE tab DROP STATISTICS a; +ALTER TABLE tab DROP STATISTICS IF EXISTS a; +ALTER TABLE tab CLEAR STATISTICS a; -- { serverError ILLEGAL_STATISTICS } +ALTER TABLE tab CLEAR STATISTICS IF EXISTS a; +ALTER TABLE tab MATERIALIZE STATISTICS b; -- { serverError ILLEGAL_STATISTICS } + +ALTER TABLE tab ADD STATISTICS a TYPE tdigest; +ALTER TABLE tab MODIFY COLUMN a Float64 TTL toDateTime(b) + INTERVAL 1 MONTH; +ALTER TABLE tab MODIFY COLUMN a Int64; -- { serverError ALTER_OF_COLUMN_IS_FORBIDDEN } + +DROP TABLE tab; diff --git a/tests/queries/0_stateless/02864_statistics_materialize_in_merge.reference b/tests/queries/0_stateless/02864_statistics_materialize_in_merge.reference new file mode 100644 index 00000000000..5e969cf41cb --- /dev/null +++ b/tests/queries/0_stateless/02864_statistics_materialize_in_merge.reference @@ -0,0 +1,10 @@ +10 +10 +10 +statistics not used Condition less(b, 10_UInt8) moved to PREWHERE +statistics not used Condition less(a, 10_UInt8) moved to PREWHERE +statistics used after merge Condition less(a, 10_UInt8) moved to PREWHERE +statistics used after merge Condition less(b, 10_UInt8) moved to PREWHERE +statistics used after materialize Condition less(a, 10_UInt8) moved to PREWHERE +statistics used after materialize Condition less(b, 10_UInt8) moved to PREWHERE +2 0 diff --git a/tests/queries/0_stateless/02864_statistics_materialize_in_merge.sql b/tests/queries/0_stateless/02864_statistics_materialize_in_merge.sql new file mode 100644 index 00000000000..6606cff263f --- /dev/null +++ b/tests/queries/0_stateless/02864_statistics_materialize_in_merge.sql @@ -0,0 +1,52 @@ +-- Tests delayed materialization of statistics in merge instead of during insert (setting 'materialize_statistics_on_insert = 0'). + +DROP TABLE IF EXISTS tab; + +SET enable_analyzer = 1; +SET allow_experimental_statistics = 1; +SET allow_statistics_optimize = 1; + +SET materialize_statistics_on_insert = 0; + +CREATE TABLE tab +( + a Int64 STATISTICS(tdigest), + b Int16 STATISTICS(tdigest), +) ENGINE = MergeTree() ORDER BY tuple() +SETTINGS min_bytes_for_wide_part = 0, enable_vertical_merge_algorithm = 0; -- TODO: there is a bug in vertical merge with statistics. + +INSERT INTO tab SELECT number, -number FROM system.numbers LIMIT 10000; + +SELECT count(*) FROM tab WHERE b < 10 and a < 10 SETTINGS log_comment = 'statistics not used'; + +OPTIMIZE TABLE tab FINAL; + +SELECT count(*) FROM tab WHERE b < 10 and a < 10 SETTINGS log_comment = 'statistics used after merge'; + +TRUNCATE TABLE tab; +SET mutations_sync = 2; + +INSERT INTO tab SELECT number, -number FROM system.numbers LIMIT 10000; +ALTER TABLE tab MATERIALIZE STATISTICS a, b; + +SELECT count(*) FROM tab WHERE b < 10 and a < 10 SETTINGS log_comment = 'statistics used after materialize'; + +DROP TABLE tab; + +SYSTEM FLUSH LOGS; + +SELECT log_comment, message FROM system.text_log JOIN +( + SELECT Settings['log_comment'] AS log_comment, query_id FROM system.query_log + WHERE current_database = currentDatabase() + AND query LIKE 'SELECT count(*) FROM tab%' + AND type = 'QueryFinish' +) AS query_log USING (query_id) +WHERE message LIKE '%moved to PREWHERE%' +ORDER BY event_time_microseconds; + +SELECT count(), sum(ProfileEvents['MergeTreeDataWriterStatisticsCalculationMicroseconds']) +FROM system.query_log +WHERE current_database = currentDatabase() + AND query LIKE 'INSERT INTO tab SELECT%' + AND type = 'QueryFinish'; diff --git a/tests/queries/0_stateless/02864_statistics_predicates.reference b/tests/queries/0_stateless/02864_statistics_predicates.reference deleted file mode 100644 index ffbd7269e05..00000000000 --- a/tests/queries/0_stateless/02864_statistics_predicates.reference +++ /dev/null @@ -1,98 +0,0 @@ -u64 and = -10 -10 -10 -10 -0 -0 -0 -0 -10 -10 -10 -10 -u64 and < -70 -70 -70 -70 -80 -80 -80 -80 -70 -70 -70 -70 -f64 and = -10 -10 -10 -10 -0 -0 -0 -0 -10 -10 -10 -10 -0 -0 -0 -0 -f64 and < -70 -70 -70 -70 -80 -80 -80 -80 -70 -70 -70 -70 -80 -80 -80 -80 -dt and = -0 -0 -0 -0 -10 -10 -10 -10 -dt and < -10000 -10000 -10000 -10000 -70 -70 -70 -70 -b and = -5000 -5000 -5000 -5000 -5000 -5000 -5000 -5000 -5000 -5000 -5000 -5000 -0 -0 -0 -0 -s and = -10 -10 diff --git a/tests/queries/0_stateless/02864_statistics_predicates.sql b/tests/queries/0_stateless/02864_statistics_predicates.sql deleted file mode 100644 index 779116cf19a..00000000000 --- a/tests/queries/0_stateless/02864_statistics_predicates.sql +++ /dev/null @@ -1,214 +0,0 @@ --- Tags: no-fasttest --- no-fasttest: 'count_min' sketches need a 3rd party library - --- Tests the cross product of all predicates with all right-hand sides on all data types and all statistics types. - -SET allow_experimental_statistics = 1; -SET allow_statistics_optimize = 1; - -DROP TABLE IF EXISTS tab; - -CREATE TABLE tab -( - u64 UInt64, - u64_tdigest UInt64 STATISTICS(tdigest), - u64_count_min UInt64 STATISTICS(count_min), - u64_uniq UInt64 STATISTICS(uniq), - f64 Float64, - f64_tdigest Float64 STATISTICS(tdigest), - f64_count_min Float64 STATISTICS(count_min), - f64_uniq Float64 STATISTICS(uniq), - dt DateTime, - dt_tdigest DateTime STATISTICS(tdigest), - dt_count_min DateTime STATISTICS(count_min), - dt_uniq DateTime STATISTICS(uniq), - b Bool, - b_tdigest Bool STATISTICS(tdigest), - b_count_min Bool STATISTICS(count_min), - b_uniq Bool STATISTICS(uniq), - s String, - -- s_tdigest String STATISTICS(tdigest), -- not supported by tdigest - s_count_min String STATISTICS(count_min) - -- s_uniq String STATISTICS(uniq), -- not supported by uniq -) Engine = MergeTree() ORDER BY tuple() -SETTINGS min_bytes_for_wide_part = 0; - -INSERT INTO tab --- SELECT number % 10000, number % 1000, -(number % 100) FROM system.numbers LIMIT 10000; -SELECT number % 1000, - number % 1000, - number % 1000, - number % 1000, - number % 1000, - number % 1000, - number % 1000, - number % 1000, - number % 1000, - number % 1000, - number % 1000, - number % 1000, - number % 2, - number % 2, - number % 2, - number % 2, - toString(number % 1000), - toString(number % 1000) -FROM system.numbers LIMIT 10000; - --- u64 ---------------------------------------------------- - -SELECT 'u64 and ='; - -SELECT count(*) FROM tab WHERE u64 = 7; -SELECT count(*) FROM tab WHERE u64_tdigest = 7; -SELECT count(*) FROM tab WHERE u64_count_min = 7; -SELECT count(*) FROM tab WHERE u64_uniq = 7; - -SELECT count(*) FROM tab WHERE u64 = 7.7; -SELECT count(*) FROM tab WHERE u64_tdigest = 7.7; -SELECT count(*) FROM tab WHERE u64_count_min = 7.7; -SELECT count(*) FROM tab WHERE u64_uniq = 7.7; - -SELECT count(*) FROM tab WHERE u64 = '7'; -SELECT count(*) FROM tab WHERE u64_tdigest = '7'; -SELECT count(*) FROM tab WHERE u64_count_min = '7'; -SELECT count(*) FROM tab WHERE u64_uniq = '7'; - -SELECT count(*) FROM tab WHERE u64 = '7.7'; -- { serverError TYPE_MISMATCH } -SELECT count(*) FROM tab WHERE u64_tdigest = '7.7'; -- { serverError TYPE_MISMATCH } -SELECT count(*) FROM tab WHERE u64_count_min = '7.7'; -- { serverError TYPE_MISMATCH } -SELECT count(*) FROM tab WHERE u64_uniq = '7.7'; -- { serverError TYPE_MISMATCH } - -SELECT 'u64 and <'; - -SELECT count(*) FROM tab WHERE u64 < 7; -SELECT count(*) FROM tab WHERE u64_tdigest < 7; -SELECT count(*) FROM tab WHERE u64_count_min < 7; -SELECT count(*) FROM tab WHERE u64_uniq < 7; - -SELECT count(*) FROM tab WHERE u64 < 7.7; -SELECT count(*) FROM tab WHERE u64_tdigest < 7.7; -SELECT count(*) FROM tab WHERE u64_count_min < 7.7; -SELECT count(*) FROM tab WHERE u64_uniq < 7.7; - -SELECT count(*) FROM tab WHERE u64 < '7'; -SELECT count(*) FROM tab WHERE u64_tdigest < '7'; -SELECT count(*) FROM tab WHERE u64_count_min < '7'; -SELECT count(*) FROM tab WHERE u64_uniq < '7'; - -SELECT count(*) FROM tab WHERE u64 < '7.7'; -- { serverError TYPE_MISMATCH } -SELECT count(*) FROM tab WHERE u64_tdigest < '7.7'; -- { serverError TYPE_MISMATCH } -SELECT count(*) FROM tab WHERE u64_count_min < '7.7'; -- { serverError TYPE_MISMATCH } -SELECT count(*) FROM tab WHERE u64_uniq < '7.7'; -- { serverError TYPE_MISMATCH } - --- f64 ---------------------------------------------------- - -SELECT 'f64 and ='; - -SELECT count(*) FROM tab WHERE f64 = 7; -SELECT count(*) FROM tab WHERE f64_tdigest = 7; -SELECT count(*) FROM tab WHERE f64_count_min = 7; -SELECT count(*) FROM tab WHERE f64_uniq = 7; - -SELECT count(*) FROM tab WHERE f64 = 7.7; -SELECT count(*) FROM tab WHERE f64_tdigest = 7.7; -SELECT count(*) FROM tab WHERE f64_count_min = 7.7; -SELECT count(*) FROM tab WHERE f64_uniq = 7.7; - -SELECT count(*) FROM tab WHERE f64 = '7'; -SELECT count(*) FROM tab WHERE f64_tdigest = '7'; -SELECT count(*) FROM tab WHERE f64_count_min = '7'; -SELECT count(*) FROM tab WHERE f64_uniq = '7'; - -SELECT count(*) FROM tab WHERE f64 = '7.7'; -SELECT count(*) FROM tab WHERE f64_tdigest = '7.7'; -SELECT count(*) FROM tab WHERE f64_count_min = '7.7'; -SELECT count(*) FROM tab WHERE f64_uniq = '7.7'; - -SELECT 'f64 and <'; - -SELECT count(*) FROM tab WHERE f64 < 7; -SELECT count(*) FROM tab WHERE f64_tdigest < 7; -SELECT count(*) FROM tab WHERE f64_count_min < 7; -SELECT count(*) FROM tab WHERE f64_uniq < 7; - -SELECT count(*) FROM tab WHERE f64 < 7.7; -SELECT count(*) FROM tab WHERE f64_tdigest < 7.7; -SELECT count(*) FROM tab WHERE f64_count_min < 7.7; -SELECT count(*) FROM tab WHERE f64_uniq < 7.7; - -SELECT count(*) FROM tab WHERE f64 < '7'; -SELECT count(*) FROM tab WHERE f64_tdigest < '7'; -SELECT count(*) FROM tab WHERE f64_count_min < '7'; -SELECT count(*) FROM tab WHERE f64_uniq < '7'; - -SELECT count(*) FROM tab WHERE f64 < '7.7'; -SELECT count(*) FROM tab WHERE f64_tdigest < '7.7'; -SELECT count(*) FROM tab WHERE f64_count_min < '7.7'; -SELECT count(*) FROM tab WHERE f64_uniq < '7.7'; - --- dt ---------------------------------------------------- - -SELECT 'dt and ='; - -SELECT count(*) FROM tab WHERE dt = '2024-08-08 11:12:13'; -SELECT count(*) FROM tab WHERE dt_tdigest = '2024-08-08 11:12:13'; -SELECT count(*) FROM tab WHERE dt_count_min = '2024-08-08 11:12:13'; -SELECT count(*) FROM tab WHERE dt_uniq = '2024-08-08 11:12:13'; - -SELECT count(*) FROM tab WHERE dt = 7; -SELECT count(*) FROM tab WHERE dt_tdigest = 7; -SELECT count(*) FROM tab WHERE dt_count_min = 7; -SELECT count(*) FROM tab WHERE dt_uniq = 7; - -SELECT 'dt and <'; - -SELECT count(*) FROM tab WHERE dt < '2024-08-08 11:12:13'; -SELECT count(*) FROM tab WHERE dt_tdigest < '2024-08-08 11:12:13'; -SELECT count(*) FROM tab WHERE dt_count_min < '2024-08-08 11:12:13'; -SELECT count(*) FROM tab WHERE dt_uniq < '2024-08-08 11:12:13'; - -SELECT count(*) FROM tab WHERE dt < 7; -SELECT count(*) FROM tab WHERE dt_tdigest < 7; -SELECT count(*) FROM tab WHERE dt_count_min < 7; -SELECT count(*) FROM tab WHERE dt_uniq < 7; - --- b ---------------------------------------------------- - -SELECT 'b and ='; - -SELECT count(*) FROM tab WHERE b = true; -SELECT count(*) FROM tab WHERE b_tdigest = true; -SELECT count(*) FROM tab WHERE b_count_min = true; -SELECT count(*) FROM tab WHERE b_uniq = true; - -SELECT count(*) FROM tab WHERE b = 'true'; -SELECT count(*) FROM tab WHERE b_tdigest = 'true'; -SELECT count(*) FROM tab WHERE b_count_min = 'true'; -SELECT count(*) FROM tab WHERE b_uniq = 'true'; - -SELECT count(*) FROM tab WHERE b = 1; -SELECT count(*) FROM tab WHERE b_tdigest = 1; -SELECT count(*) FROM tab WHERE b_count_min = 1; -SELECT count(*) FROM tab WHERE b_uniq = 1; - -SELECT count(*) FROM tab WHERE b = 1.1; -SELECT count(*) FROM tab WHERE b_tdigest = 1.1; -SELECT count(*) FROM tab WHERE b_count_min = 1.1; -SELECT count(*) FROM tab WHERE b_uniq = 1.1; - --- s ---------------------------------------------------- - -SELECT 's and ='; - -SELECT count(*) FROM tab WHERE s = 7; -- { serverError NO_COMMON_TYPE } --- SELECT count(*) FROM tab WHERE s_tdigest = 7; -- not supported -SELECT count(*) FROM tab WHERE s_count_min = 7; -- { serverError NO_COMMON_TYPE } --- SELECT count(*) FROM tab WHERE s_uniq = 7; -- not supported - -SELECT count(*) FROM tab WHERE s = '7'; --- SELECT count(*) FROM tab WHERE s_tdigest = '7'; -- not supported -SELECT count(*) FROM tab WHERE s_count_min = '7'; --- SELECT count(*) FROM tab WHERE s_uniq = '7'; -- not supported - -DROP TABLE tab; diff --git a/tests/queries/0_stateless/02864_statistics_uniq.reference b/tests/queries/0_stateless/02864_statistics_uniq.reference new file mode 100644 index 00000000000..77786dbdd8c --- /dev/null +++ b/tests/queries/0_stateless/02864_statistics_uniq.reference @@ -0,0 +1,35 @@ +CREATE TABLE default.t1\n(\n `a` Float64 STATISTICS(tdigest),\n `b` Int64 STATISTICS(tdigest),\n `c` Int64 STATISTICS(tdigest, uniq),\n `pk` String\n)\nENGINE = MergeTree\nORDER BY pk\nSETTINGS min_bytes_for_wide_part = 0, index_granularity = 8192 +After insert + Prewhere info + Prewhere filter + Prewhere filter column: and(less(a, 10), equals(c, 0), less(b, 10)) (removed) + Prewhere info + Prewhere filter + Prewhere filter column: and(equals(c, 11), less(a, 10), less(b, 10)) (removed) +After merge + Prewhere info + Prewhere filter + Prewhere filter column: and(less(a, 10), equals(c, 0), less(b, 10)) (removed) + Prewhere info + Prewhere filter + Prewhere filter column: and(equals(c, 11), less(a, 10), less(b, 10)) (removed) +After modify TDigest + Prewhere info + Prewhere filter + Prewhere filter column: and(less(a, 10), equals(c, 11), less(b, 10)) (removed) + Prewhere info + Prewhere filter + Prewhere filter column: and(less(a, 10), equals(c, 0), less(b, 10)) (removed) + Prewhere info + Prewhere filter + Prewhere filter column: and(less(c, -1), less(a, 10), less(b, 10)) (removed) +After drop + Prewhere info + Prewhere filter + Prewhere filter column: and(less(a, 10), equals(c, 11), less(b, 10)) (removed) + Prewhere info + Prewhere filter + Prewhere filter column: and(less(a, 10), equals(c, 0), less(b, 10)) (removed) + Prewhere info + Prewhere filter + Prewhere filter column: and(less(a, 10), less(c, -1), less(b, 10)) (removed) diff --git a/tests/queries/0_stateless/02864_statistics_uniq.sql b/tests/queries/0_stateless/02864_statistics_uniq.sql new file mode 100644 index 00000000000..0f5f353c045 --- /dev/null +++ b/tests/queries/0_stateless/02864_statistics_uniq.sql @@ -0,0 +1,73 @@ +DROP TABLE IF EXISTS t1; + +SET allow_experimental_statistics = 1; +SET allow_statistics_optimize = 1; +SET mutations_sync = 1; + +CREATE TABLE t1 +( + a Float64 STATISTICS(tdigest), + b Int64 STATISTICS(tdigest), + c Int64 STATISTICS(tdigest, uniq), + pk String, +) Engine = MergeTree() ORDER BY pk +SETTINGS min_bytes_for_wide_part = 0; + +SHOW CREATE TABLE t1; + +INSERT INTO t1 select number, -number, number/1000, generateUUIDv4() FROM system.numbers LIMIT 10000; +INSERT INTO t1 select 0, 0, 11, generateUUIDv4(); + +SELECT 'After insert'; +SELECT replaceRegexpAll(explain, '__table1.|_UInt8|_Int8', '') FROM (EXPLAIN actions=1 SELECT count(*) FROM t1 WHERE b < 10 and c = 0 and a < 10) WHERE explain LIKE '%Prewhere%' OR explain LIKE '%Filter column%'; +SELECT replaceRegexpAll(explain, '__table1.|_UInt8|_Int8', '') FROM (EXPLAIN actions=1 SELECT count(*) FROM t1 WHERE b < 10 and c = 11 and a < 10) WHERE explain LIKE '%Prewhere%' OR explain LIKE '%Filter column%'; +OPTIMIZE TABLE t1 FINAL; + +SELECT 'After merge'; +SELECT replaceRegexpAll(explain, '__table1.|_UInt8|_Int8', '') FROM (EXPLAIN actions=1 SELECT count(*) FROM t1 WHERE b < 10 and c = 0 and a < 10) WHERE explain LIKE '%Prewhere%' OR explain LIKE '%Filter column%'; +SELECT replaceRegexpAll(explain, '__table1.|_UInt8|_Int8', '') FROM (EXPLAIN actions=1 SELECT count(*) FROM t1 WHERE b < 10 and c = 11 and a < 10) WHERE explain LIKE '%Prewhere%' OR explain LIKE '%Filter column%'; + +SELECT 'After modify TDigest'; +ALTER TABLE t1 MODIFY STATISTICS c TYPE TDigest; +ALTER TABLE t1 MATERIALIZE STATISTICS c; + +SELECT replaceRegexpAll(explain, '__table1.|_UInt8|_Int8', '') FROM (EXPLAIN actions=1 SELECT count(*) FROM t1 WHERE b < 10 and c = 11 and a < 10) WHERE explain LIKE '%Prewhere%' OR explain LIKE '%Filter column%'; +SELECT replaceRegexpAll(explain, '__table1.|_UInt8|_Int8', '') FROM (EXPLAIN actions=1 SELECT count(*) FROM t1 WHERE b < 10 and c = 0 and a < 10) WHERE explain LIKE '%Prewhere%' OR explain LIKE '%Filter column%'; +SELECT replaceRegexpAll(explain, '__table1.|_UInt8|_Int8', '') FROM (EXPLAIN actions=1 SELECT count(*) FROM t1 WHERE b < 10 and c < -1 and a < 10) WHERE explain LIKE '%Prewhere%' OR explain LIKE '%Filter column%'; + + +ALTER TABLE t1 DROP STATISTICS c; + +SELECT 'After drop'; +SELECT replaceRegexpAll(explain, '__table1.|_UInt8|_Int8', '') FROM (EXPLAIN actions=1 SELECT count(*) FROM t1 WHERE b < 10 and c = 11 and a < 10) WHERE explain LIKE '%Prewhere%' OR explain LIKE '%Filter column%'; +SELECT replaceRegexpAll(explain, '__table1.|_UInt8|_Int8', '') FROM (EXPLAIN actions=1 SELECT count(*) FROM t1 WHERE b < 10 and c = 0 and a < 10) WHERE explain LIKE '%Prewhere%' OR explain LIKE '%Filter column%'; +SELECT replaceRegexpAll(explain, '__table1.|_UInt8|_Int8', '') FROM (EXPLAIN actions=1 SELECT count(*) FROM t1 WHERE b < 10 and c < -1 and a < 10) WHERE explain LIKE '%Prewhere%' OR explain LIKE '%Filter column%'; + +DROP TABLE IF EXISTS t1; +DROP TABLE IF EXISTS t2; +SET allow_suspicious_low_cardinality_types=1; +CREATE TABLE t2 +( + a Float64 STATISTICS(tdigest), + b Int64 STATISTICS(tdigest), + c LowCardinality(Int64) STATISTICS(tdigest, uniq), + pk String, +) Engine = MergeTree() ORDER BY pk +SETTINGS min_bytes_for_wide_part = 0; +INSERT INTO t2 select number, -number, number/1000, generateUUIDv4() FROM system.numbers LIMIT 10000; + +DROP TABLE IF EXISTS t2; +DROP TABLE IF EXISTS t3; + +CREATE TABLE t3 +( + a Float64 STATISTICS(tdigest), + b Int64 STATISTICS(tdigest), + c Nullable(Int64) STATISTICS(tdigest, uniq), + pk String, +) Engine = MergeTree() ORDER BY pk +SETTINGS min_bytes_for_wide_part = 0; +INSERT INTO t3 select number, -number, number/1000, generateUUIDv4() FROM system.numbers LIMIT 10000; + +DROP TABLE IF EXISTS t3; + diff --git a/tests/queries/0_stateless/02864_statistics_usage.reference b/tests/queries/0_stateless/02864_statistics_usage.reference deleted file mode 100644 index a9f669b88c1..00000000000 --- a/tests/queries/0_stateless/02864_statistics_usage.reference +++ /dev/null @@ -1,20 +0,0 @@ -After insert - Prewhere info - Prewhere filter - Prewhere filter column: and(less(a, 10_UInt8), less(b, 10_UInt8)) (removed) -After drop statistic - Prewhere info - Prewhere filter - Prewhere filter column: and(less(b, 10_UInt8), less(a, 10_UInt8)) (removed) -After add and materialize statistic - Prewhere info - Prewhere filter - Prewhere filter column: and(less(a, 10_UInt8), less(b, 10_UInt8)) (removed) -After merge - Prewhere info - Prewhere filter - Prewhere filter column: and(less(a, 10_UInt8), less(b, 10_UInt8)) (removed) -After rename - Prewhere info - Prewhere filter - Prewhere filter column: and(less(a, 10_UInt8), less(c, 10_UInt8)) (removed) diff --git a/tests/queries/0_stateless/02864_statistics_usage.sql b/tests/queries/0_stateless/02864_statistics_usage.sql deleted file mode 100644 index 4956bd27e87..00000000000 --- a/tests/queries/0_stateless/02864_statistics_usage.sql +++ /dev/null @@ -1,42 +0,0 @@ --- Test that the optimizer picks up column statistics --- (The concrete statistics type, column data type and predicate type don't matter) - --- Checks by the predicate evaluation order in EXPLAIN. This is quite fragile, a better approach would be helpful (maybe 'send_logs_level'?) - -SET allow_experimental_statistics = 1; -SET allow_statistics_optimize = 1; -SET mutations_sync = 1; -SET enable_analyzer = 1; - -DROP TABLE IF EXISTS tab; - -CREATE TABLE tab -( - a Float64 STATISTICS(tdigest), - b Int64 STATISTICS(tdigest) -) Engine = MergeTree() ORDER BY tuple() -SETTINGS min_bytes_for_wide_part = 0; - -INSERT INTO tab select number, -number FROM system.numbers LIMIT 10000; -SELECT 'After insert'; -SELECT replaceRegexpAll(explain, '__table1\.', '') FROM (EXPLAIN actions=1 SELECT count(*) FROM tab WHERE b < 10 and a < 10) WHERE explain LIKE '%Prewhere%'; -- checks a first, then b (statistics used) - -ALTER TABLE tab DROP STATISTICS a, b; -SELECT 'After drop statistic'; -SELECT replaceRegexpAll(explain, '__table1\.', '') FROM (EXPLAIN actions=1 SELECT count(*) FROM tab WHERE b < 10 and a < 10) WHERE explain LIKE '%Prewhere%'; -- checks b first, then a (statistics not used) - -ALTER TABLE tab ADD STATISTICS a, b TYPE tdigest; -ALTER TABLE tab MATERIALIZE STATISTICS a, b; -INSERT INTO tab select number, -number FROM system.numbers LIMIT 10000; -SELECT 'After add and materialize statistic'; -SELECT replaceRegexpAll(explain, '__table1\.', '') FROM (EXPLAIN actions=1 SELECT count(*) FROM tab WHERE b < 10 and a < 10) WHERE explain LIKE '%Prewhere%'; -- checks a first, then b (statistics used) - -OPTIMIZE TABLE tab FINAL; -SELECT 'After merge'; -SELECT replaceRegexpAll(explain, '__table1\.', '') FROM (EXPLAIN actions=1 SELECT count(*) FROM tab WHERE b < 10 and a < 10) WHERE explain LIKE '%Prewhere%'; -- checks a first, then b (statistics used) - -ALTER TABLE tab RENAME COLUMN b TO c; -SELECT 'After rename'; -SELECT replaceRegexpAll(explain, '__table1\.', '') FROM (EXPLAIN actions=1 SELECT count(*) FROM tab WHERE c < 10 and a < 10) WHERE explain LIKE '%Prewhere%'; -- checks a first, then c (statistics used) - -DROP TABLE IF EXISTS tab;