diff options
Diffstat (limited to 'mysql-test/main/selectivity_innodb.result')
| -rw-r--r-- | mysql-test/main/selectivity_innodb.result | 75 |
1 files changed, 71 insertions, 4 deletions
diff --git a/mysql-test/main/selectivity_innodb.result b/mysql-test/main/selectivity_innodb.result index 4ee2da02ec6..dfba12f2b05 100644 --- a/mysql-test/main/selectivity_innodb.result +++ b/mysql-test/main/selectivity_innodb.result @@ -843,7 +843,7 @@ flush table t1; set optimizer_use_condition_selectivity=4; explain extended select * from t1 where a=0; id select_type table type possible_keys key key_len ref rows filtered Extra -1 SIMPLE t1 ALL NULL NULL NULL NULL 1025 0.39 Using where +1 SIMPLE t1 ALL NULL NULL NULL NULL 1025 0.78 Using where Warnings: Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` = 0 drop table t1; @@ -1659,7 +1659,7 @@ test.t1 analyze status OK # Check what info the optimizer has about selectivities explain extended select * from t1 use index () where a in (17,51,5); id select_type table type possible_keys key key_len ref rows filtered Extra -1 SIMPLE t1 ALL NULL NULL NULL NULL 1000 3.90 Using where +1 SIMPLE t1 ALL NULL NULL NULL NULL 1000 3.91 Using where Warnings: Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` USE INDEX () where `test`.`t1`.`a` in (17,51,5) explain extended select * from t1 use index () where b=2; @@ -1945,11 +1945,78 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 5 25.00 Using where Warnings: Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` = 2 +DROP TABLE t1; +# End of 10.2 tests +# +# MDEV-31067: selectivity_from_histogram >1.0 for a DOUBLE_PREC_HB histogram +# +create table t0(a int); +insert into t0 select 1 from seq_1_to_78; +create table t1(a int); +insert into t1 select 1 from seq_1_to_26; +create table t10 (a int); +insert into t10 select 0 from t0, seq_1_to_4; +insert into t10 select 8693 from t1; +insert into t10 select 8694 from t1; +insert into t10 select 8695 from t1; +insert into t10 select 34783 from t1; +insert into t10 select 34784 from t1; +insert into t10 select 34785 from t1; +insert into t10 select 34785 from t0, seq_1_to_8; +insert into t10 select 65214 from t1; +insert into t10 select 65215 from t1; +insert into t10 select 65216 from t1; +insert into t10 select 65216 from t0, seq_1_to_52; +insert into t10 select 65217 from t1; +insert into t10 select 65218 from t1; +insert into t10 select 65219 from t1; +insert into t10 select 65219 from t0; +insert into t10 select 73913 from t1; +insert into t10 select 73914 from t1; +insert into t10 select 73915 from t1; +insert into t10 select 73915 from t0, seq_1_to_40; +insert into t10 select 78257 from t1; +insert into t10 select 78258 from t1; +insert into t10 select 78259 from t1; +insert into t10 select 91300 from t1; +insert into t10 select 91301 from t1; +insert into t10 select 91302 from t1; +insert into t10 select 91302 from t0, seq_1_to_6; +insert into t10 select 91303 from t1; +insert into t10 select 91304 from t1; +insert into t10 select 91305 from t1; +insert into t10 select 91305 from t0, seq_1_to_8; +insert into t10 select 99998 from t1; +insert into t10 select 99999 from t1; +insert into t10 select 100000 from t1; +set use_stat_tables=preferably; +analyze table t10 persistent for all; +Table Op Msg_type Msg_text +test.t10 analyze status Engine-independent statistics collected +test.t10 analyze status OK +flush tables; +set statement optimizer_trace=1 for +explain select * from t10 where a in (91303); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t10 ALL NULL NULL NULL NULL 9984 Using where +# Must have selectivity_from_histogram <= 1.0: +select json_detailed(json_extract(trace, '$**.selectivity_for_columns')) +from information_schema.optimizer_trace; +json_detailed(json_extract(trace, '$**.selectivity_for_columns')) +[ + [ + { + "column_name": "a", + "ranges": + ["91303 <= a <= 91303"], + "selectivity_from_histogram": 0.035714283 + } + ] +] +drop table t0,t1,t10; set optimizer_use_condition_selectivity= @save_optimizer_use_condition_selectivity; set histogram_size=@save_histogram_size; set use_stat_tables= @save_use_stat_tables; -DROP TABLE t1; -# End of 10.2 tests set @@global.histogram_size=@save_histogram_size; set optimizer_switch=@save_optimizer_switch_for_selectivity_test; set @tmp_ust= @@use_stat_tables; |