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-rw-r--r--sql/sql_update.cc7
1 files changed, 7 insertions, 0 deletions
diff --git a/sql/sql_update.cc b/sql/sql_update.cc
index 63e45ac1fec..1b808d333d8 100644
--- a/sql/sql_update.cc
+++ b/sql/sql_update.cc
@@ -1066,6 +1066,13 @@ bool mysql_prepare_update(THD *thd, TABLE_LIST *table_list,
thd->lex->allow_sum_func= 0;
+ /*
+ We do not call DT_MERGE_FOR_INSERT because it has no sense for simple
+ (not multi-) update
+ */
+ if (mysql_handle_derived(thd->lex, DT_PREPARE))
+ DBUG_RETURN(TRUE);
+
if (setup_tables_and_check_access(thd, &select_lex->context,
&select_lex->top_join_list,
table_list,