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-rw-r--r--sql/sql_union.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/sql/sql_union.cc b/sql/sql_union.cc
index bf93f0d3bea..3e6a3944093 100644
--- a/sql/sql_union.cc
+++ b/sql/sql_union.cc
@@ -65,7 +65,7 @@ bool select_union::send_data(List<Item> &values)
if ((error= table->file->ha_write_row(table->record[0])))
{
/* create_myisam_from_heap will generate error if needed */
- if (error != HA_ERR_FOUND_DUPP_KEY && error != HA_ERR_FOUND_DUPP_UNIQUE &&
+ if (table->file->is_fatal_error(error, HA_CHECK_DUP) &&
create_myisam_from_heap(thd, table, &tmp_table_param, error, 1))
return 1;
}