1 files changed, 5 insertions, 0 deletions
diff --git a/sql/sql_parse.cc b/sql/sql_parse.cc
index 909cb245b2e..400b6d70273 100644
--- a/sql/sql_parse.cc
+++ b/sql/sql_parse.cc
@@ -4369,6 +4369,11 @@ mysql_execute_command(THD *thd)
     /* mysql_update return 2 if we need to switch to multi-update */
     if (up_result != 2)
       break;
+    if (thd->lex->period_conditions.is_set())
+    {
+      DBUG_ASSERT(0); // Should never happen
+      goto error;
+    }
   }
   /* fall through */
   case SQLCOM_UPDATE_MULTI: