settle_down_management/pro-base/src/main/resources/mybatis/customerManagement/CustomerManagementExtendMapper.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.idea.customerManagement.mapper.CustomerManagementExtendMapper">


  <select id="listByModel" resultType="com.idea.customerManagement.dto.CustomerManagementDto">
    select customer_management.*,
           concat(park_info.group_name,park_floor_disc.name) groupDiscName
    from customer_management
    left join park_info on park_info.id = customer_management.group_id
    left join park_floor_disc on park_floor_disc.id = customer_management.disc_id
    <where>
      <if test="buyerName != null and buyerName != ''">
        and buyer_name like concat ('%',#{buyerName},'%')
      </if>
      <if test="status != null and status != ''">
        and status = #{status}
      </if>
      <if test="groupId != null and groupId != ''">
        and group_id = #{groupId}
      </if>
      <if test="discId != null and discId != ''">
        and disc_id = #{discId}
      </if>
    </where>
    order by batch_number desc,room_selection_number asc
  </select>
</mapper>