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| author | Oleksandr Byelkin <sanja@mariadb.com> | 2015-05-13 16:17:22 +0200 |
|---|---|---|
| committer | Oleksandr Byelkin <sanja@mariadb.com> | 2015-10-29 21:05:00 +0100 |
| commit | fb4358f4324cfb9cec5c1f7c52ffa90839a2fe69 (patch) | |
| tree | 73c42861788e6bd154aa0fda14f088c3c20f1ad5 /sql/opt_subselect.cc | |
| parent | 937aa7ad774e0d73a2e97d46bfdaba006ff7fe1d (diff) | |
| download | mariadb-git-fb4358f4324cfb9cec5c1f7c52ffa90839a2fe69.tar.gz | |
MDEV-7949: Item_field::used_tables() takes 0.29% in OLTP RO
small sixes of used_tables() usage
Diffstat (limited to 'sql/opt_subselect.cc')
| -rw-r--r-- | sql/opt_subselect.cc | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/sql/opt_subselect.cc b/sql/opt_subselect.cc index 1566ab43074..4b21ffebe1f 100644 --- a/sql/opt_subselect.cc +++ b/sql/opt_subselect.cc @@ -1570,8 +1570,9 @@ static bool convert_subq_to_sj(JOIN *parent_join, Item_in_subselect *subq_pred) DBUG_RETURN(TRUE); thd->lex->current_select=save_lex; - sj_nest->nested_join->sj_corr_tables= subq_pred->used_tables(); - sj_nest->nested_join->sj_depends_on= subq_pred->used_tables() | + table_map subq_pred_used_tables= subq_pred->used_tables(); + sj_nest->nested_join->sj_corr_tables= subq_pred_used_tables; + sj_nest->nested_join->sj_depends_on= subq_pred_used_tables | subq_pred->left_expr->used_tables(); sj_nest->sj_on_expr= subq_lex->join->conds; |