diff options
Diffstat (limited to 'sql/sql_prepare.cc')
| -rw-r--r-- | sql/sql_prepare.cc | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sql/sql_prepare.cc b/sql/sql_prepare.cc index 2f5470db123..5b4e0698de4 100644 --- a/sql/sql_prepare.cc +++ b/sql/sql_prepare.cc @@ -1609,7 +1609,13 @@ static int mysql_test_select(Prepared_statement *stmt, if (!lex->describe && !thd->lex->analyze_stmt && !stmt->is_sql_prepare()) { /* Make copy of item list, as change_columns may change it */ - List<Item> fields(lex->first_select_lex()->item_list); + + SELECT_LEX_UNIT* master_unit= lex->first_select_lex()->master_unit(); + bool is_union_op= + master_unit->is_unit_op() || master_unit->fake_select_lex; + + List<Item> fields(is_union_op ? unit->item_list : + lex->first_select_lex()->item_list); /* Change columns if a procedure like analyse() */ if (unit->last_procedure && unit->last_procedure->change_columns(thd, fields)) |