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| author | Igor Babaev <igor@askmonty.org> | 2018-05-17 22:56:27 -0700 |
|---|---|---|
| committer | Igor Babaev <igor@askmonty.org> | 2018-05-17 22:58:21 -0700 |
| commit | de86997160ea5e02e7fc6eb877d5823e96b64523 (patch) | |
| tree | d841fc4cad41d13437fbce025151b5b68cdeccd3 /sql/sql_yacc.yy | |
| parent | 52c98bf830cc14948f6a950961c77d64d20677a6 (diff) | |
| download | mariadb-git-de86997160ea5e02e7fc6eb877d5823e96b64523.tar.gz | |
MDEV-15581 Incorrect result (missing row) with UNION DISTINCT in anchor parts
The current code does not support recursive CTEs whose specifications
contain a mix of ALL UNION and DISTINCT UNION operations.
This patch catches such specifications and reports errors for them.
Diffstat (limited to 'sql/sql_yacc.yy')
| -rw-r--r-- | sql/sql_yacc.yy | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sql/sql_yacc.yy b/sql/sql_yacc.yy index b2088b0e640..47e5f2f9402 100644 --- a/sql/sql_yacc.yy +++ b/sql/sql_yacc.yy @@ -707,6 +707,7 @@ bool add_select_to_union_list(LEX *lex, bool is_union_distinct, return TRUE; mysql_init_select(lex); lex->current_select->linkage=UNION_TYPE; + lex->current_select->with_all_modifier= !is_union_distinct; if (is_union_distinct) /* UNION DISTINCT - remember position */ lex->current_select->master_unit()->union_distinct= lex->current_select; |