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| author | Igor Babaev <igor@askmonty.org> | 2019-02-19 02:44:27 -0800 |
|---|---|---|
| committer | Igor Babaev <igor@askmonty.org> | 2019-02-19 02:45:24 -0800 |
| commit | 8283d7d2c029cb520214ae7d33af8851acc80892 (patch) | |
| tree | 9e805ca20f1913fa005a59db48aeeb7f02ad31fe /sql/item_cmpfunc.cc | |
| parent | 7fe1ca7ed6ac5d28a51a08749c8cdc64495d6911 (diff) | |
| download | mariadb-git-8283d7d2c029cb520214ae7d33af8851acc80892.tar.gz | |
MDEV-7486: Condition pushdown from HAVING into WHERE
Optimized the code that removed multiple equalities pushed from HAVING
into WHERE. Now this removal is postponed until all multiple equalities
are eliminated in substitute_for_best_equal_field().
Diffstat (limited to 'sql/item_cmpfunc.cc')
| -rw-r--r-- | sql/item_cmpfunc.cc | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/sql/item_cmpfunc.cc b/sql/item_cmpfunc.cc index b4ff4ab3fe0..55a06254917 100644 --- a/sql/item_cmpfunc.cc +++ b/sql/item_cmpfunc.cc @@ -6509,8 +6509,6 @@ Item_equal::Item_equal(THD *thd, Item_equal *item_equal): with_const= item_equal->with_const; cond_false= item_equal->cond_false; upper_levels= item_equal->upper_levels; - if (item_equal->upper_levels) - item_equal->upper_levels->increase_references(); } @@ -7353,8 +7351,6 @@ Item_equal::excl_dep_on_group_fields_for_having_pushdown(st_select_lex *sel) { if (item->excl_dep_on_group_fields_for_having_pushdown(sel)) { - if (upper_levels) - upper_levels->references--; set_extraction_flag(FULL_EXTRACTION_FL); return true; } |