1 files changed, 5 insertions, 1 deletions
diff --git a/sql/sql_select.h b/sql/sql_select.h
index dfa96f1c81c..50168f6592c 100644
--- a/sql/sql_select.h
+++ b/sql/sql_select.h
@@ -1071,6 +1071,10 @@ public:
     (if sql_calc_found_rows is used, LIMIT is ignored)
   */
   ha_rows select_limit;
+  /*
+    Number of duplicate rows found in UNION.
+  */
+  ha_rows duplicate_rows;
   /**
     Used to fetch no more than given amount of rows per one
     fetch operation of server side cursor.
@@ -1347,7 +1351,7 @@ public:
     sort_and_group= 0;
     first_record= 0;
     do_send_rows= 1;
-    send_records= 0;
+    duplicate_rows= send_records= 0;
     found_records= 0;
     fetch_limit= HA_POS_ERROR;
     join_examined_rows= 0;