select * from tb_dept select d.id, d.dept_name as deptName, d.tel, d.email, d.desc, COUNT(u.id) AS emps from tb_dept d left join tb_user u on u.dept_id = d.id 1 = 1 AND d.dept_name like "%${searchKeyWord}%" OR d.tel = #{searchKeyWord} OR d.email = #{searchKeyWord} OR d.desc like "%${searchKeyWord}%" GROUP BY d.id select * from tb_dept where id = #{id} insert into tb_dept values(#{id},#{deptName},#{tel},#{email},#{desc}) update tb_dept set `dept_name` = #{deptName}, `tel` = #{tel}, `email` = #{email}, `desc` = #{desc} where `id` = #{id} delete from tb_dept where id = #{id} delete from tb_dept where id in #{id}