Ticket #49284: class-wp-meta-query.diff

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

@@ -620 +620 @@
                                         $this->table_aliases[] = $subquery_alias;
 
                                         $meta_compare_string_start  = 'NOT EXISTS (';
-                                        $meta_compare_string_start .= "SELECT 1 FROM $wpdb->postmeta $subquery_alias ";
-                                        $meta_compare_string_start .= "WHERE $subquery_alias.post_ID = $alias.post_ID ";
+                                        $meta_compare_string_start .= "SELECT 1 FROM $this->meta_table $subquery_alias ";
+                                        $meta_compare_string_start .= "WHERE $subquery_alias.$this->meta_id_column = $alias.$this->meta_id_column ";
                                         $meta_compare_string_end    = 'LIMIT 1';
                                         $meta_compare_string_end   .= ')';
                                 }