Cui Zhi Feng
2024-08-28 ad6e2c216fb5b653285e6b82c46327e77b0ffb75
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<?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.mzl.flower.mapper.payment.CartMapper">
 
    <select id="getCartFlowerCount" resultType="java.lang.Integer">
        select sum(num) num
        from t_cart
        where create_by = #{userId}
        <if test="flowerId != null">
            AND flower_id = #{flowerId}
        </if>
    </select>
 
</mapper>