Ticket #15018: wp-includes-classes-filter-end.patch

wp-includes/classes.php

@@ -643 +643 @@
                         unset($meta_compare_string);
                 }
 
-                return array( $join, $where );
+                return apply_filters( 'get_meta_sql', array( $join, $where ), $meta_query, $primary_table, $primary_id_column, $meta_table, $meta_id_column );
         }
 
         /*