Fix of result code check by Monty's request.

06117977 · Oleksandr Byelkin · d1b666b5 · 06117977
Commit 06117977 authored Nov 13, 2017 by Oleksandr Byelkin
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sql/sql_union.cc sql/sql_union.cc +2 -1

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--- a/sql/sql_union.cc
+++ b/sql/sql_union.cc
@@ -302,7 +302,8 @@ int select_union_recursive::send_data(List<Item> &values)
 {
  int rc= select_unit::send_data(values);
-  if (write_err != HA_ERR_FOUND_DUPP_KEY && 
+  if (rc == 0 &&
+      write_err != HA_ERR_FOUND_DUPP_KEY &&
      write_err != HA_ERR_FOUND_DUPP_UNIQUE)
  { 
    int err;