select * from user where username = #{username} and userpassword = #{userpassword} select * from user where id=#{id} update user set realname=#{realname},sex=#{sex},tel=#{tel} where id=#{id} update user set userpassword=#{1} where id=#{0} select * from user where usertype!='管理员' order by id desc insert into user values(null,#{username},#{userpassword},#{realname},#{sex},#{tel},0,#{usertype}) select * from user where username =#{username} select * from user where usertype!='管理员' and (username like "%"#{0}"%" or realname like "%"#{0}"%") order by id desc update user set realname=#{realname},sex=#{sex},tel=#{tel} where id=#{id} delete from user where id=#{id}