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| author | Sergey Petrunya <psergey@askmonty.org> | 2012-01-08 14:43:14 +0400 |
|---|---|---|
| committer | Sergey Petrunya <psergey@askmonty.org> | 2012-01-08 14:43:14 +0400 |
| commit | 0b590282fc116a1911eabe4cf1c7804a66f9bb48 (patch) | |
| tree | d16ebbfaa4bad9cb8412cfbd4220f5a685126253 /sql/sql_select.cc | |
| parent | cd55894a52b5b2bf4a740eb0f39d91d7a82f673c (diff) | |
| download | mariadb-git-0b590282fc116a1911eabe4cf1c7804a66f9bb48.tar.gz | |
BUG#912510: Crash in do_copy_not_null with semijoin=ON, firstmatch=ON, aggregate ...
- Create/use do_copy_nullable_row_to_notnull() function for ref access, which is used
when copying from not-NULL field in table that can be NULL-complemented to not-NULL field.
Diffstat (limited to 'sql/sql_select.cc')
| -rw-r--r-- | sql/sql_select.cc | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sql/sql_select.cc b/sql/sql_select.cc index cb620495897..c332b13dff6 100644 --- a/sql/sql_select.cc +++ b/sql/sql_select.cc @@ -646,6 +646,9 @@ JOIN::prepare(Item ***rref_pointer_array, aggregate functions and non-aggregate fields, any non-aggregated field may produce a NULL value. Set all fields of each table as nullable before semantic analysis to take into account this change of nullability. + + Note: this loop doesn't touch tables inside merged semi-joins, because + subquery-to-semijoin conversion has not been done yet. This is intended. */ if (mixed_implicit_grouping) tbl->table->maybe_null= 1; |