sky-take-out/sky-server/src/main/resources/mapper/SetmealMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.sky.mapper.SetmealMapper">

    <!-- 根据分类id查询套餐的数量 -->
    <select id="countByCategoryId" resultType="java.lang.Integer">
        select count(id)
        from setmeal
        where category_id = #{categoryId}
    </select>

    <!-- 动态条件查询套餐 -->
    <select id="list" parameterType="Setmeal" resultType="Setmeal">
        select * from setmeal
        <where>
            <if test="name != null">
                and name like concat('%',#{name},'%')
            </if>
            <if test="categoryId != null">
                and category_id = #{categoryId}
            </if>
            <if test="status != null">
                and status = #{status}
            </if>
        </where>
    </select>

    <!-- 根据套餐id查询菜品选项 -->
    <select id="getDishItemBySetmealId" resultType="com.sky.vo.DishItemVO">
        select sd.name, sd.copies, d.image, d.description
        from setmeal_dish sd
                 left join dish d on sd.dish_id = d.id
        where sd.setmeal_id = #{setmealId}
    </select>
</mapper>