<?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.UserDao">

    <!--<select id="getStudentNum" resultType="String" parameterType="String">-->
    <!--select student_num-->
    <!--from SZ_V_School_Student-->
    <!--where school_id = #{school_id}-->
    <!--and studentcode = #{studentcode}-->
    <!--</select>-->

    <select id="getStudentWiSidAndSex" resultType="java.lang.String">

        select student_num from SZ_V_School_Student where school_id = #{schoolId} and sex in
        <foreach collection="sexs" item="sex" index="index" open="(" separator="," close=")">

            #{sex}

        </foreach>

    </select>

</mapper>