delete from sys_user_dept where user_id=#{userId} select user_id, dept_id from sys_user_dept and user_id = #{userId} and dept_id = #{deptId} where user_id = #{userId} insert into sys_user_dept user_id, dept_id, #{userId}, #{deptId}, update sys_user_dept dept_id = #{deptId}, where user_id = #{userId} delete from sys_user_dept where user_id = #{userId} delete from sys_user_dept where user_id in #{userId} insert into sys_user_dept(user_id, dept_id) values (#{item.userId},#{item.deptId})