#210219 follow by myself: update_sql() does not support placeholders, so we...

#210219 follow by myself: update_sql() does not support placeholders, so we should compose our own SQL ourselfs

modules/system/system.install

@@ -2484,9 +2484,8 @@ function system_update_6046() {
  */
 function system_update_6047() {
   $ret = array();
-  $ret[] = update_sql("UPDATE {blocks} SET cache = %d WHERE module = '%s' AND delta = '%s'", -1, 'user', '0');
-  $ret[] = update_sql("UPDATE {blocks} SET cache = %d WHERE module = '%s' AND delta = '%s'", -1, 'user', '1');
-  $ret[] = update_sql("UPDATE {blocks} SET cache = %d WHERE module = '%s' AND delta = '%s'", -1, 'system', '0');
+  $ret[] = update_sql("UPDATE {blocks} SET cache = -1 WHERE module = 'user' AND delta IN ('0', '1')");
+  $ret[] = update_sql("UPDATE {blocks} SET cache = -1 WHERE module = 'system' AND delta = '0'");
   return $ret;
 }