trace/yudao-module-product/yudao-module-product-biz/target/classes/mapper/landinfo/LandInfoMapper.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="cn.iocoder.yudao.module.product.dal.mysql.landinfo.LandInfoMapper">

    <!--
        一般情况下，尽可能使用 Mapper 进行 CRUD 增删改查即可。
        无法满足的场景，例如说多表关联查询，才使用 XML 编写 SQL。
        代码生成器暂时只生成 Mapper XML 文件本身，更多推荐 MybatisX 快速开发插件来生成查询。
        文档可见：https://www.iocoder.cn/MyBatis/x-plugins/
     -->

    <select id="selectLandInfoById"
            resultType="cn.iocoder.yudao.module.product.dal.dataobject.landinfo.LandInfoDO">
        SELECT a.*,b.land_type_name info_type_name,c.land_state_name info_state_name
        FROM product_land_info a
        LEFT JOIN  product_land_info_type b on a.land_type = b.id
        LEFT JOIN  product_land_block_state c on a.state = c.id
        WHERE a.deleted = 0
        <if test="landName != null and landName != ''"> and a.land_name LIKE CONCAT('%', #{landName}, '%') </if>
        <if test="landId != null and landId != ''"> and a.land_id = #{landId} </if>
        <if test="belongBusinessName != null and belongBusinessName != ''"> and a.belong_business_name = #{belongBusinessName} </if>
        <if test="state != null and state != ''"> and c.id = #{state} </if>
        ORDER BY a.id DESC
    </select>

    <select id="getLandStatistics" resultType="cn.iocoder.yudao.module.product.controller.admin.statistics.vo.TopDataRespVO">
        SELECT
            COUNT(id) landCount, SUM(size) totalLandSize
        FROM product_land_info
    </select>
</mapper>