INSERT INTO followship(befollower,follower,isclassmate,areaid) VALUES (#{befollower},#{follower},#{isclassmate},#{areaid}) DELETE FROM followship WHERE follower = #{follower} AND befollower = #{befollower} SELECT * FROM followship WHERE follower = #{follower} AND befollower = #{befollower} SELECT * FROM followship WHERE follower = #{follower} SELECT * FROM followship WHERE befollower = #{befollower} SELECT COUNT(*) FROM followship WHERE befollower = #{befollower}