上传文件

src/main/resources/mapper/template/DriverStockMapper.xml

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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.template.mapper.DriverStockMapper">
+
+    <resultMap id="Tj" type="com.template.model.tongji.Tj">
+        <result property="name" column="name"/>
+        <result property="num" column="num"/>
+    </resultMap>
+
+    <resultMap id="TjF" type="com.template.model.tongji.TjFloat">
+        <result property="name" column="name"/>
+        <result property="num" column="num"/>
+    </resultMap>
+
+    <!--年级统计-->
+    <select id="getClassTj" resultMap="Tj">
+        select `name`, COUNT(*) as num from ( select IFNULL(b.`name`,'未知') `name` from `smart_user` a
+                left join `smart_grade` b on a.`grade`=b.id ) c group by `name`
+    </select>
+
+    <!--访客统计-->
+    <select id="getVisitorTj" resultMap="Tj">
+        select case visitor_type when '1' then '家长' when '2' then '其他'
+            end as `name`,COUNT(*) as num from `smart_visitor` group by visitor_type
+    </select>
+
+    <!--能耗总量统计-->
+    <select id="getEnergyTj" resultMap="TjF">
+        select case meter_type when 1 then '用电量' when 0 then '用水量' end as `name`,
+               SUM(meter_power) as num from `smart_meter_detail`
+                   group by meter_type
+    </select>
+
+</mapper>