<?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.dkha.dao.SysRoleUserDao"> <delete id="deleteByRoleIds"> delete from sys_role_user where role_id in <foreach item="roleId" collection="array" open="(" separator="," close=")"> #{roleId} </foreach> </delete> <delete id="deleteByUserId"> delete from sys_role_user where user_id = #{value} </delete> <select id="getRoleIdList" resultType="long"> select role_id from sys_role_user where user_id = #{value} </select> </mapper>