mirror of
https://github.com/MariaDB/server.git
synced 2025-06-16 01:34:37 +02:00
1b934a387c
This is needed to make it easy for users to automatically ignore long char and varchars when using ANALYZE TABLE PERSISTENT. These fields can cause problems as they will consume 'CHARACTERS * MAX_CHARACTER_LENGTH * 2 * number_of_rows' space on disk during analyze, which can easily be much bigger than the analyzed table. This commit adds a new user variable, analyze_max_length, default value 4G. Any field that is bigger than this in bytes, will be ignored by ANALYZE TABLE PERSISTENT unless it is specified in FOR COLUMNS(). While doing this patch, I noticed that we do not skip GEOMETRY columns from ANALYZE TABLE, like we do with BLOB. This should be fixed when merging to the 'main' branch. At the same time we should add a resonable default value for analyze_max_length, probably 1024, like we have for max_sort_length.
331 lines
12 KiB
Text
331 lines
12 KiB
Text
--source include/have_sequence.inc
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--source include/have_innodb.inc
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#
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# Bug #10901 Analyze Table on new table destroys table
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# This is minimal test case to get error
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# The problem was that analyze table wrote the shared state to the
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# file and this didn't include the inserts while locked. A check was
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# needed to ensure that state information was not updated when
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# executing analyze table for a locked table. The analyze table had
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# to be within locks and check table had to be after unlocking since
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# then it brings the wrong state from disk rather than from the
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# currently correct internal state. The insert is needed since it
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# changes the file state, number of records. The fix is to
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# synchronise the state of the shared state and the current state
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# before calling mi_state_info_write
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#
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--source include/default_optimizer_switch.inc
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create table t1 (a bigint);
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lock tables t1 write;
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insert into t1 values(0);
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analyze table t1;
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unlock tables;
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check table t1;
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drop table t1;
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create table t1 (a bigint);
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insert into t1 values(0);
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lock tables t1 write;
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delete from t1;
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analyze table t1;
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unlock tables;
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check table t1;
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drop table t1;
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create table t1 (a bigint);
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insert into t1 values(0);
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analyze table t1;
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check table t1;
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drop table t1;
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# Bug #14902 ANALYZE TABLE fails to recognize up-to-date tables
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# minimal test case to get an error.
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# The problem is happening when analysing table with FT index that
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# contains stopwords only. The first execution of analyze table should
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# mark index statistics as up to date so that next execution of this
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# statement will end up with Table is up to date status.
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create table t1 (a mediumtext, fulltext key key1(a)) charset utf8 collate utf8_general_ci engine myisam;
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insert into t1 values ('hello');
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analyze table t1;
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analyze table t1;
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drop table t1;
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#
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# procedure in PS BUG#13673
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#
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CREATE TABLE t1 (a int);
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prepare stmt1 from "SELECT * FROM t1 PROCEDURE ANALYSE()";
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execute stmt1;
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execute stmt1;
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deallocate prepare stmt1;
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drop table t1;
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#
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# bug#15225 (ANALYZE temporary has no effect)
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#
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create temporary table t1(a int, index(a));
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insert into t1 values('1'),('2'),('3'),('4'),('5');
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analyze table t1;
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show index from t1;
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drop table t1;
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--echo End of 4.1 tests
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#
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# Bug #30495: optimize table t1,t2,t3 extended errors
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#
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create table t1(a int);
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--error 1064
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analyze table t1 extended;
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--error 1064
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optimize table t1 extended;
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drop table t1;
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--echo End of 5.0 tests
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--echo #
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--echo # Test analyze of text column (not yet supported)
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--echo #
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set optimizer_use_condition_selectivity=4;
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set histogram_type='single_prec_hb';
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set histogram_size=255;
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create table t1 (a int not null, t tinytext, tx text);
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insert into t1 select seq+1, repeat('X',seq*5), repeat('X',seq*10) from seq_0_to_50;
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insert into t1 select seq+100, repeat('X',5), "" from seq_1_to_10;
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analyze table t1;
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explain select count(*) from t1 where t='XXXXXX';
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select column_name, min_value, max_value, hist_size from mysql.column_stats where table_name='t1';
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drop table t1;
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set use_stat_tables=default;
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set histogram_type=default;
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set histogram_size=default;
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--echo #
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--echo # MDEV-31957 Concurrent ALTER and ANALYZE collecting statistics can
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--echo # result in stale statistical data
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--echo #
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CREATE TABLE t1 (a INT, b VARCHAR(128));
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INSERT INTO t1 SELECT seq, CONCAT('s',seq) FROM seq_1_to_100;
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# We have to disable query log as the ANALYZE TABLE can be run in different
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# order. The important thing is what is finally in column_stats
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--disable_result_log
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--connect (con1,localhost,root,,)
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--send ALTER TABLE t1 MODIFY b BLOB
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--connection default
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ANALYZE TABLE t1 PERSISTENT FOR ALL;
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--connection con1
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--reap
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ANALYZE TABLE t1 PERSISTENT FOR ALL;
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--connection default
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--disconnect con1
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--enable_result_log
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select db_name,table_name,column_name from mysql.column_stats;
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drop table t1;
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--echo #
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--echo # Testing swapping columns
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--echo #
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create or replace table t1 (a int primary key, b varchar(100), c varchar(100), d varchar(100)) engine=innodb;
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insert into t1 select seq, repeat('b',seq),repeat('c',mod(seq,5)), repeat('d',mod(seq,10)) from seq_1_to_100;
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ANALYZE TABLE t1 PERSISTENT FOR ALL;
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select db_name,table_name,column_name,avg_length from mysql.column_stats order by column_name;
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alter table t1 change b c varchar(200), change c b varchar(200);
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select db_name,table_name,column_name,avg_length from mysql.column_stats order by column_name;
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alter table t1 change b c varchar(200), change c d varchar(200), change d b varchar(200) ;
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select db_name,table_name,column_name,avg_length from mysql.column_stats order by column_name;
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alter table t1 change b c varchar(200), change c d varchar(200), change d e varchar(200) ;
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select db_name,table_name,column_name,avg_length from mysql.column_stats order by column_name;
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alter table t1 change e d varchar(200), drop column d;
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select db_name,table_name,column_name,avg_length from mysql.column_stats order by column_name;
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--echo # Test having non existing column in column_stats
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insert into mysql.column_stats (db_name,table_name,column_name) values ("test","t1","b");
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alter table t1 change c d varchar(200), change d b varchar(200);
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select db_name,table_name,column_name,avg_length from mysql.column_stats order by column_name;
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--echo # Test having a conflicting temporary name
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insert into mysql.column_stats (db_name,table_name,column_name) values ("test","t1",concat("#sql_tmp_name#1",char(0)));
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alter table t1 change d b varchar(200), change b d varchar(200);
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select db_name,table_name,column_name,avg_length from mysql.column_stats order by column_name;
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drop table t1;
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truncate table mysql.column_stats;
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create or replace table t1 (a int primary key, b varchar(100), c varchar(100), d varchar(100)) engine=myisam;
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insert into t1 select seq, repeat('b',seq),repeat('c',mod(seq,5)), repeat('d',mod(seq,10)) from seq_1_to_100;
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ANALYZE TABLE t1 PERSISTENT FOR ALL;
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select db_name,table_name,column_name,avg_length from mysql.column_stats order by column_name;
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alter table t1 change b c varchar(200), change c b varchar(200);
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select db_name,table_name,column_name,avg_length from mysql.column_stats order by column_name;
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analyze table t1 persistent for columns(b,c) indexes all;
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alter table t1 change b c varchar(200), change c d varchar(200), change d b varchar(200) ;
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select db_name,table_name,column_name,avg_length from mysql.column_stats order by column_name;
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analyze table t1 persistent for columns(d) indexes all;
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alter table t1 change b c varchar(200), change c d varchar(200), change d e varchar(200) ;
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select db_name,table_name,column_name,avg_length from mysql.column_stats order by column_name;
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alter table t1 change e d varchar(200), drop column d;
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select db_name,table_name,column_name,avg_length from mysql.column_stats order by column_name;
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drop table t1;
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truncate table mysql.column_stats;
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create table t1 (a int, b blob, unique(b)) engine= innodb;
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analyze table t1 persistent for all;
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select column_name from mysql.column_stats where table_name = 't1';
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drop table t1;
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create table t1 (a int, b blob, c int generated always as (length(b)) virtual) engine= innodb;
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analyze table t1 persistent for all;
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select column_name from mysql.column_stats where table_name = 't1';
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drop table t1;
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CREATE or replace TABLE t1 (a INT, b CHAR(8));
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ANALYZE TABLE t1 PERSISTENT FOR ALL;
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ALTER TABLE t1 CHANGE b c INT, ORDER BY b;
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SELECT db_name, table_name, column_name FROM mysql.column_stats where table_name = 't1';
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drop table t1;
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CREATE or replace TABLE t1 (a INT, b CHAR(8));
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ANALYZE TABLE t1 PERSISTENT FOR ALL;
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ALTER TABLE t1 RENAME COLUMN b to c, ALGORITHM=COPY;
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SELECT db_name, table_name, column_name FROM mysql.column_stats where table_name = 't1';
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drop table t1;
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--echo #
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--echo # Testing swapping indexes
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--echo #
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create or replace table t1 (a int primary key, b varchar(100), c varchar(100), d varchar(100), index (b), index(c), index(d,b)) engine=innodb;
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insert into t1 select seq, repeat('b',seq),repeat('c',mod(seq,5)), repeat('d',mod(seq,10)) from seq_1_to_100;
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ANALYZE TABLE t1 PERSISTENT FOR ALL;
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select * from mysql.index_stats order by index_name, prefix_arity;
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alter table t1 rename index b to c, rename index c to d, rename index d to b;
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select * from mysql.index_stats order by index_name;
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alter table t1 rename index b to c, rename index c to d, rename index d to e;
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select * from mysql.index_stats order by index_name, prefix_arity;
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alter table t1 rename index e to b;
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alter table t1 change b c varchar(200), change c d varchar(200), change d e varchar(200) ;
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show create table t1;
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select * from mysql.index_stats order by index_name, prefix_arity;
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--echo # Test having a conflicting temporary name
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insert into mysql.index_stats (db_name,table_name,index_name,prefix_arity) values ("test","t1",concat("#sql_tmp_name#1",char(0)),1);
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alter table t1 rename index c to d, rename index d to c;
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select * from mysql.index_stats order by index_name, prefix_arity;
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drop table t1;
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select * from mysql.index_stats order by index_name, prefix_arity;
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--echo #
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--echo # Test of adding key that replaces foreign key
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--echo #
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CREATE TABLE t1 (aaaa INT, b INT, KEY(b), FOREIGN KEY(aaaa) REFERENCES t1(b)) ENGINE=InnoDB;
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ANALYZE TABLE t1 PERSISTENT FOR ALL;
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SELECT index_name FROM mysql.index_stats WHERE table_name = 't1' order by index_name;
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ALTER TABLE t1 ADD KEY idx(aaaa);
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SHOW CREATE TABLE t1;
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SELECT index_name FROM mysql.index_stats WHERE table_name = 't1' order by index_name;
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truncate table mysql.index_stats;
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ANALYZE TABLE t1 PERSISTENT FOR ALL;
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SELECT index_name FROM mysql.index_stats WHERE table_name = 't1' order by index_name;
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--error ER_DROP_INDEX_FK
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ALTER TABLE t1 DROP KEY idx;
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DROP TABLE t1;
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--echo #
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--echo # Check index rename where name is not changed
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--echo #
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create or replace table t1 (a int primary key, b int, c int, key b (b,c));
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show create table t1;
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analyze table t1 persistent for all;
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select * from mysql.index_stats where table_name= "t1";
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alter ignore table t1 rename key `b` to b, LOCK=shared;
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select * from mysql.index_stats where table_name= "t1";
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alter ignore table t1 rename key `b` to `B`, LOCK=shared;
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select * from mysql.index_stats where table_name= "t1";
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drop table t1;
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--echo #
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--echo # Crash inis_eits_usable()
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--echo #
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CREATE TABLE t1 (a int) ENGINE=MyISAM;
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CREATE TABLE t2 (b int) ENGINE=MyISAM;
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INSERT INTO t1 (a) VALUES (4), (6);
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INSERT INTO t2 (b) VALUES (0), (8);
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set @save_join_cache_level=@@join_cache_level;
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set @save_optimizer_switch=@@optimizer_switch;
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SET join_cache_level=3;
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SET optimizer_switch='join_cache_hashed=on';
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SET optimizer_switch='join_cache_bka=on';
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set optimizer_switch='hash_join_cardinality=on';
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EXPLAIN
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SELECT * FROM t1, t2 WHERE b=a;
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SELECT * FROM t1, t2 WHERE b=a;
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DROP TABLE t1,t2;
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set @@optimizer_switch=@save_optimizer_switch;
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set @@join_cache_level=@save_join_cache_level;
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--echo #
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--echo # MDEV-32531 MSAN / Valgrind errors in Item_func_like::get_mm_leaf with
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--echo # temporal field
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--echo #
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CREATE TABLE t1 (f DATE);
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INSERT INTO t1 VALUES ('1978-08-27'),('1906-04-30');
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ANALYZE TABLE t1 PERSISTENT FOR ALL;
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SELECT * FROM t1 WHERE f LIKE '2023%';
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DROP TABLE t1;
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--echo #
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--echo # MDEV-36536 Add option to not collect statistics for long char/varchars
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--echo #
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select @@session.analyze_max_length;
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create table t1 (c0 char(2), c1 char(16), c2 char(64), v1 varchar(16), v2 varchar(1000), b1 blob, i1 int)
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character set utf8mb4 COLLATE utf8mb4_bin;
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insert into t1 values ("A", "A","A","A","A","A",1), ("B","B","B","B","B","B",1);
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ANALYZE TABLE t1 PERSISTENT FOR ALL;
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select column_name from mysql.column_stats where table_name = 't1';
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set @@session.analyze_max_length= 64;
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truncate table mysql.column_stats;
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ANALYZE TABLE t1 PERSISTENT FOR ALL;
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select column_name from mysql.column_stats where table_name = 't1';
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truncate table mysql.column_stats;
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ANALYZE TABLE t1 PERSISTENT for COLUMNS (c0,c2,v1,v2,i1) INDEXES ALL;
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select column_name from mysql.column_stats where table_name = 't1';
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set @@session.analyze_max_length= default;
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drop table t1;
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--echo #
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--echo # End of 10.6 tests
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--echo #
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