merge( array( '_fulfillment_status' ), $order_ids ); $wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->prefix}wc_orders_meta WHERE meta_key = %s AND order_id IN (" . implode( ',', array_fill( 0, count( $order_ids ), '%d' ) ) . ')', ...$order_params ) ); } else { $wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->prefix}wc_orders_meta WHERE meta_key = %s", '_fulfillment_status' ) ); } } }