| 715 | if ( $this->relation == 'OR' && ! isset( $q['value'] ) && ! empty( $q['key'] ) ) |
| 716 | $key_only_queries[$k] = $q; |
| 717 | |
| 718 | else |
| 719 | $queries[$k] = $q; |
| 720 | } |
| 721 | |
| 722 | // Specify all the meta_key only queries in one go |
| 723 | if ( $key_only_queries ) { |
| 724 | $join[] = "INNER JOIN $meta_table ON $primary_table.$primary_id_column = $meta_table.$meta_id_column"; |
| 725 | |
| 726 | foreach ( $key_only_queries as $key => $q ) |
| 727 | $where["key-only-$key"] = $wpdb->prepare( "$meta_table.meta_key = %s", trim( $q['key'] ) ); |
| 728 | } |
| 729 | |
| 730 | foreach ( $queries as $k => $q ) { |