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MDEV-20440: Optimizer trace: print more details about semi-join optimization

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Followup patch: fix typos
This commit is contained in:
Sergei Petrunia 2019-09-12 19:07:56 +03:00
commit d0b74bbacc
2 changed files with 17 additions and 8 deletions
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17
mysql-test/main/opt_trace.result
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@ -2970,7 +2970,7 @@ explain extended select * from t1 where a in (select pk from t10) {
"read_time": 27.129
},
{
"chosen_strategy": "SJ-Materialize"
"chosen_strategy": "SJ-Materialization"
}
],
"estimated_join_cardinality": 3
@ -4609,7 +4609,7 @@ explain select * from t1 where a in (select t_inner_1.a from t1 t_inner_1, t1 t_
"read_time": 18.315
},
{
"chosen_strategy": "SJ-Materialize"
"chosen_strategy": "SJ-Materialization"
}
],
"estimated_join_cardinality": 3
@ -6309,7 +6309,14 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
]
},
{
"fix_semijoin_strategies_for_picked_join_order": []
"fix_semijoin_strategies_for_picked_join_order": [
{
"semi_join_strategy": "DuplicateWeedout"
},
{
"semi_join_strategy": "DuplicateWeedout"
}
]
},
{
"best_join_order": [
@ -6833,7 +6840,7 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
"read_time": 37.226
},
{
"chosen_strategy": "SJ-Materialize"
"chosen_strategy": "SJ-Materialization"
}
],
"rest_of_plan": [
@ -6935,7 +6942,7 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
"read_time": 294.96
},
{
"chosen_strategy": "SJ-Materialize"
"chosen_strategy": "SJ-Materialization"
}
],
"estimated_join_cardinality": 27