Ticket #41266: 41266-approach-2.diff

src/wp-includes/class-wp-meta-query.php

@@ -511 +511 @@
                 $alias = $this->find_compatible_table_alias( $clause, $parent_query );
                 if ( false === $alias ) {
                         $i = count( $this->table_aliases );
-                        $alias = $i ? 'mt' . $i : $this->meta_table;
+                        $alias = $i ? apply_filters( 'meta_query_get_meta_table_alias' , 'mt' ) . $i : $this->meta_table;
 
                         // JOIN clauses for NOT EXISTS have their own syntax.
                         if ( 'NOT EXISTS' === $meta_compare ) {