<?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.example.dahua.dao">

    <!--<select id="getStudentNum" resultType="String" parameterType="String">-->

        <!--select student_num-->
        <!--from SZ_V_School_Student-->
        <!--where school_id = #{school_id}-->
          <!--and studentcode = #{studentcode}-->

    <!--</select>-->

</mapper>