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Fixed bug mdev-11161.

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The flag TABLE_LIST::fill_me must be reset to false at the prepare
phase for any materialized derived table used in the executed query.
Otherwise if the optimizer decides to generate a key for such a table
it is generated only for the first execution of the query.
This commit is contained in:
Igor Babaev
2016-11-11 20:55:03 -08:00
parent 10aee66896
commit 96b62b5514
3 changed files with 139 additions and 0 deletions
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sql/sql_derived.cc
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@ -651,6 +651,8 @@ bool mysql_derived_prepare(THD *thd, LEX *lex, TABLE_LIST *derived)
unit->derived= derived;
derived->fill_me= FALSE;
if (!(derived->derived_result= new select_union))
DBUG_RETURN(TRUE); // out of memory