对程序中的mysql嵌套查询有什么建议吗?
CREATE DEFINER=`root`@`%` PROCEDURE `GET_PLACE_PARENT_CATEGORY`(IN paramCategoryId INT)
BEGIN
SELECT pc.place_parent_category_id, (SELECT pcc.place_category FROM place_category pcc WHERE pcc.place_category_id = pc.place_parent_category_id )
FROM place_category pc WHERE pc.place_category_id = paramCategoryId;
END