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authorSergei Petrunia <psergey@askmonty.org>2018-10-23 14:12:59 +0200
committerSergei Petrunia <psergey@askmonty.org>2018-11-05 21:10:15 +0300
commitf0cf85fd15509179bf6e33176cb89761fc89e5a9 (patch)
tree384729ebf41ab131f47a155f844aa9511d7b5366 /mysql-test/main/join_outer_jcl6.result
parent14b62b15784233df105a3684d362827b2883bed4 (diff)
downloadmariadb-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/main/join_outer_jcl6.result')
-rw-r--r--mysql-test/main/join_outer_jcl6.result32
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';