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# # Bug mdev-3866: valgrind complain from ANALYZE on a table with BIT field # SET use_stat_tables = 'preferably'; CREATE TABLE t1 (pk int PRIMARY KEY, a bit(1), INDEX idx(a) ) ENGINE=MyISAM PARTITION BY KEY(pk) PARTITIONS 2; INSERT INTO t1 VALUES (1,1),(2,0),(3,0),(4,1); ANALYZE TABLE t1; Table Op Msg_type Msg_text test.t1 analyze status Engine-independent statistics collected test.t1 analyze status OK DROP TABLE t1; # # MDEV-21472: ALTER TABLE ... ANALYZE PARTITION ... with EITS reads and locks all rows # CREATE TABLE t1 ( id int(11) auto_increment primary key, c1 int(11) DEFAULT NULL ) PARTITION BY RANGE (id) ( PARTITION p0 VALUES LESS THAN (4), PARTITION p1 VALUES LESS THAN MAXVALUE ); insert into t1(c1) values (1),(1),(1),(1), (1),(1),(1),(1); insert into t1(c1) select c1 from t1; insert into t1(c1) select c1 from t1; select count(*) from t1; count(*) 32 select count(*) from t1 where id <4; count(*) 3 flush status; set session use_stat_tables='preferably'; # Must NOT show "Engine-independent statistics collected": alter table t1 analyze partition p0; Table Op Msg_type Msg_text test.t1 analyze status OK # Should not have Handler_read_rnd_next=34 show session status like 'Handler_read_rnd%'; Variable_name Value Handler_read_rnd 0 Handler_read_rnd_deleted 0 Handler_read_rnd_next 0 drop table t1; SET use_stat_tables = DEFAULT;