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author | Sergei Petrunia <psergey@askmonty.org> | 2018-10-23 14:12:59 +0200 |
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committer | Sergei Petrunia <psergey@askmonty.org> | 2018-11-05 21:10:15 +0300 |
commit | f0cf85fd15509179bf6e33176cb89761fc89e5a9 (patch) | |
tree | 384729ebf41ab131f47a155f844aa9511d7b5366 /mysql-test | |
parent | 14b62b15784233df105a3684d362827b2883bed4 (diff) | |
download | mariadb-git-f0cf85fd15509179bf6e33176cb89761fc89e5a9.tar.gz |
MDEV-17518: Range optimization doesn't use ON expressions from nested outer joins
Update .result files after the previous patch
Diffstat (limited to 'mysql-test')
-rw-r--r-- | mysql-test/main/join_outer_jcl6.result | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/mysql-test/main/join_outer_jcl6.result b/mysql-test/main/join_outer_jcl6.result index 842ab19e20a..6f5e4b3e85e 100644 --- a/mysql-test/main/join_outer_jcl6.result +++ b/mysql-test/main/join_outer_jcl6.result @@ -2542,7 +2542,39 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 10 1 SIMPLE t2 ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join) 1 SIMPLE t3 range a a 5 NULL 5 Using where; Rowid-ordered scan; Using join buffer (incremental, BNL join) +# +# .. part 2: make sure condition selectivity can use the condition too. +# +alter table t3 drop key a; +set @tmp1=@@optimizer_use_condition_selectivity; +set @tmp2=@@use_stat_tables; +set @tmp3=@@histogram_size; +set use_stat_tables=preferably; +set optimizer_use_condition_selectivity=4; +set histogram_size=100; +analyze table t3 persistent for all; +Table Op Msg_type Msg_text +test.t3 analyze status Engine-independent statistics collected +test.t3 analyze status OK +# t3.filtered is less than 100%: +explain extended select * from t1 left join t3 on t1.a=t3.b and t3.a<5; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 10 100.00 +1 SIMPLE t3 hash_ALL NULL #hash#$hj 5 test.t1.a 1000 0.99 Using where; Using join buffer (flat, BNLH join) +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b` from `test`.`t1` left join `test`.`t3` on(`test`.`t3`.`b` = `test`.`t1`.`a` and `test`.`t3`.`a` < 5 and `test`.`t1`.`a` is not null) where 1 +# t3.filtered must less than 100%, too: +explain extended select * from t1 left join (t3 join t2) on t1.a=t3.b and t3.a<5; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 10 100.00 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where +1 SIMPLE t3 ALL NULL NULL NULL NULL 1000 0.99 Using where +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t2`.`a` AS `a` from `test`.`t1` left join (`test`.`t3` join `test`.`t2`) on(`test`.`t3`.`b` = `test`.`t1`.`a` and `test`.`t3`.`a` < 5 and `test`.`t1`.`a` is not null) where 1 drop table t1,t2,t3; +set optimizer_use_condition_selectivity= @tmp1; +set use_stat_tables= @tmp2; +set histogram_size= @tmp3; SET optimizer_switch=@save_optimizer_switch; set join_cache_level=default; show variables like 'join_cache_level'; |