diff options
| -rw-r--r-- | mysql-test/r/selectivity.result | 47 | ||||
| -rw-r--r-- | mysql-test/r/selectivity_innodb.result | 85 | ||||
| -rw-r--r-- | mysql-test/t/selectivity.test | 33 | ||||
| -rw-r--r-- | mysql-test/t/selectivity_innodb.test | 25 | ||||
| -rw-r--r-- | sql/opt_range.cc | 9 |
5 files changed, 198 insertions, 1 deletions
diff --git a/mysql-test/r/selectivity.result b/mysql-test/r/selectivity.result index c2364e11ceb..8fb5cd17c51 100644 --- a/mysql-test/r/selectivity.result +++ b/mysql-test/r/selectivity.result @@ -1470,3 +1470,50 @@ d drop table t1; set optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity; set use_stat_tables=@save_use_stat_tables; +# +# Bug mdev-9628: unindexed blob column without min-max statistics +# with optimizer_use_condition_selectivity=3 +# +set use_stat_tables='preferably'; +set optimizer_use_condition_selectivity=3; +create table t1(col1 char(32)); +insert into t1 values ('a'),('b'),('c'),('d'), ('e'),('f'),('g'),('h'); +analyze table t1; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table t2(col1 text); +insert into t2 values ('a'),('b'),('c'),('d'), ('e'),('f'),('g'),('h'); +analyze table t2; +Table Op Msg_type Msg_text +test.t2 analyze status Engine-independent statistics collected +test.t2 analyze status OK +select * from t1 where col1 > 'b' and col1 < 'd'; +col1 +c +explain extended +select * from t1 where col1 > 'b' and col1 < 'd'; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 8 28.57 Using where +Warnings: +Note 1003 select `test`.`t1`.`col1` AS `col1` from `test`.`t1` where ((`test`.`t1`.`col1` > 'b') and (`test`.`t1`.`col1` < 'd')) +select * from t2 where col1 > 'b' and col1 < 'd'; +col1 +c +explain extended +select * from t2 where col1 > 'b' and col1 < 'd'; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 8 100.00 Using where +Warnings: +Note 1003 select `test`.`t2`.`col1` AS `col1` from `test`.`t2` where ((`test`.`t2`.`col1` > 'b') and (`test`.`t2`.`col1` < 'd')) +select * from t2 where col1 < 'b' and col1 > 'd'; +col1 +explain extended +select * from t2 where col1 < 'b' and col1 > 'd'; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +Warnings: +Note 1003 select `test`.`t2`.`col1` AS `col1` from `test`.`t2` where 0 +drop table t1,t2; +set optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity; +set use_stat_tables=@save_use_stat_tables; diff --git a/mysql-test/r/selectivity_innodb.result b/mysql-test/r/selectivity_innodb.result index 882f51515b2..3d15131dbb5 100644 --- a/mysql-test/r/selectivity_innodb.result +++ b/mysql-test/r/selectivity_innodb.result @@ -1474,6 +1474,53 @@ d drop table t1; set optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity; set use_stat_tables=@save_use_stat_tables; +# +# Bug mdev-9628: unindexed blob column without min-max statistics +# with optimizer_use_condition_selectivity=3 +# +set use_stat_tables='preferably'; +set optimizer_use_condition_selectivity=3; +create table t1(col1 char(32)); +insert into t1 values ('a'),('b'),('c'),('d'), ('e'),('f'),('g'),('h'); +analyze table t1; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table t2(col1 text); +insert into t2 values ('a'),('b'),('c'),('d'), ('e'),('f'),('g'),('h'); +analyze table t2; +Table Op Msg_type Msg_text +test.t2 analyze status Engine-independent statistics collected +test.t2 analyze status OK +select * from t1 where col1 > 'b' and col1 < 'd'; +col1 +c +explain extended +select * from t1 where col1 > 'b' and col1 < 'd'; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 8 28.57 Using where +Warnings: +Note 1003 select `test`.`t1`.`col1` AS `col1` from `test`.`t1` where ((`test`.`t1`.`col1` > 'b') and (`test`.`t1`.`col1` < 'd')) +select * from t2 where col1 > 'b' and col1 < 'd'; +col1 +c +explain extended +select * from t2 where col1 > 'b' and col1 < 'd'; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 8 100.00 Using where +Warnings: +Note 1003 select `test`.`t2`.`col1` AS `col1` from `test`.`t2` where ((`test`.`t2`.`col1` > 'b') and (`test`.`t2`.`col1` < 'd')) +select * from t2 where col1 < 'b' and col1 > 'd'; +col1 +explain extended +select * from t2 where col1 < 'b' and col1 > 'd'; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +Warnings: +Note 1003 select `test`.`t2`.`col1` AS `col1` from `test`.`t2` where 0 +drop table t1,t2; +set optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity; +set use_stat_tables=@save_use_stat_tables; set optimizer_switch=@save_optimizer_switch_for_selectivity_test; set @tmp_ust= @@use_stat_tables; set @tmp_oucs= @@optimizer_use_condition_selectivity; @@ -1560,6 +1607,44 @@ where t1.child_user_id=t3.id and t1.child_group_id is null and t2.lower_group_na parent_id child_group_id child_user_id id lower_group_name directory_id id drop table t1,t2,t3; # +# MDEV-9187: duplicate of bug mdev-9628 +# +set use_stat_tables = preferably; +set optimizer_use_condition_selectivity=3; +CREATE TABLE t1 (f1 char(32)) ENGINE=InnoDB; +INSERT INTO t1 VALUES ('foo'),('bar'),('qux'); +ANALYZE TABLE t1; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +SELECT * FROM t1 WHERE f1 < 'm'; +f1 +foo +bar +EXPLAIN EXTENDED +SELECT * FROM t1 WHERE f1 < 'm'; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 72.09 Using where +Warnings: +Note 1003 select `test`.`t1`.`f1` AS `f1` from `test`.`t1` where (`test`.`t1`.`f1` < 'm') +CREATE TABLE t2 (f1 TEXT) ENGINE=InnoDB; +INSERT INTO t2 VALUES ('foo'),('bar'),('qux'); +ANALYZE TABLE t2; +Table Op Msg_type Msg_text +test.t2 analyze status Engine-independent statistics collected +test.t2 analyze status OK +SELECT * FROM t2 WHERE f1 <> 'qux'; +f1 +foo +bar +EXPLAIN EXTENDED +SELECT * FROM t2 WHERE f1 <> 'qux'; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 select `test`.`t2`.`f1` AS `f1` from `test`.`t2` where (`test`.`t2`.`f1` <> 'qux') +DROP TABLE t1,t2; +# # End of 10.0 tests # set use_stat_tables= @tmp_ust; diff --git a/mysql-test/t/selectivity.test b/mysql-test/t/selectivity.test index 1321046009e..8efc5216ba0 100644 --- a/mysql-test/t/selectivity.test +++ b/mysql-test/t/selectivity.test @@ -992,3 +992,36 @@ drop table t1; set optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity; set use_stat_tables=@save_use_stat_tables; +--echo # +--echo # Bug mdev-9628: unindexed blob column without min-max statistics +--echo # with optimizer_use_condition_selectivity=3 +--echo # + +set use_stat_tables='preferably'; +set optimizer_use_condition_selectivity=3; + +create table t1(col1 char(32)); +insert into t1 values ('a'),('b'),('c'),('d'), ('e'),('f'),('g'),('h'); +analyze table t1; + +create table t2(col1 text); +insert into t2 values ('a'),('b'),('c'),('d'), ('e'),('f'),('g'),('h'); +analyze table t2; + +select * from t1 where col1 > 'b' and col1 < 'd'; +explain extended +select * from t1 where col1 > 'b' and col1 < 'd'; + +select * from t2 where col1 > 'b' and col1 < 'd'; +explain extended +select * from t2 where col1 > 'b' and col1 < 'd'; + +select * from t2 where col1 < 'b' and col1 > 'd'; +explain extended +select * from t2 where col1 < 'b' and col1 > 'd'; + +drop table t1,t2; + +set optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity; +set use_stat_tables=@save_use_stat_tables; + diff --git a/mysql-test/t/selectivity_innodb.test b/mysql-test/t/selectivity_innodb.test index d6a77eac600..25aa0abbc3b 100644 --- a/mysql-test/t/selectivity_innodb.test +++ b/mysql-test/t/selectivity_innodb.test @@ -110,6 +110,31 @@ where t1.child_user_id=t3.id and t1.child_group_id is null and t2.lower_group_na drop table t1,t2,t3; --echo # +--echo # MDEV-9187: duplicate of bug mdev-9628 +--echo # + +set use_stat_tables = preferably; +set optimizer_use_condition_selectivity=3; + +CREATE TABLE t1 (f1 char(32)) ENGINE=InnoDB; +INSERT INTO t1 VALUES ('foo'),('bar'),('qux'); +ANALYZE TABLE t1; + +SELECT * FROM t1 WHERE f1 < 'm'; +EXPLAIN EXTENDED +SELECT * FROM t1 WHERE f1 < 'm'; + +CREATE TABLE t2 (f1 TEXT) ENGINE=InnoDB; +INSERT INTO t2 VALUES ('foo'),('bar'),('qux'); +ANALYZE TABLE t2; + +SELECT * FROM t2 WHERE f1 <> 'qux'; +EXPLAIN EXTENDED +SELECT * FROM t2 WHERE f1 <> 'qux'; + +DROP TABLE t1,t2; + +--echo # --echo # End of 10.0 tests --echo # diff --git a/sql/opt_range.cc b/sql/opt_range.cc index e0ca43e6d72..5d6891a1edf 100644 --- a/sql/opt_range.cc +++ b/sql/opt_range.cc @@ -3345,9 +3345,16 @@ bool create_key_parts_for_pseudo_indexes(RANGE_OPT_PARAM *param, { Field *field= *field_ptr; uint16 store_length; + uint16 max_key_part_length= (uint16) table->file->max_key_part_length(); key_part->key= keys; key_part->part= 0; - key_part->length= (uint16) field->key_length(); + if (field->flags & BLOB_FLAG) + key_part->length= max_key_part_length; + else + { + key_part->length= (uint16) field->key_length(); + set_if_smaller(key_part->length, max_key_part_length); + } store_length= key_part->length; if (field->real_maybe_null()) store_length+= HA_KEY_NULL_LENGTH; |