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- package com.sky.mapper;
- import org.apache.ibatis.annotations.Mapper;
- import org.apache.ibatis.annotations.Select;
- @Mapper
- public interface DishMapper {
- /**
- * 根据分类id查询菜品数量
- * @param categoryId
- * @return
- */
- @Select("select count(id) from dish where category_id = #{categoryId}")
- Integer countByCategoryId(Long categoryId);
- }
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