<?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.newfiber.api.pc.dao.HomePageDataMapper"> <select id="selectPointData" resultType="com.newfiber.api.pc.model.vo.SewerageTotal"> select is_key_point as isKeyPoint,COUNT(id) count from instant.sewerage_user GROUP BY is_key_point </select> </mapper>