INSERT INTO FollowShip ( beFollower, follower, isClassmate , areaid ) Values ( #{beFollower}, #{follower}, #{isClassmate} , #{areaid} ) UPDATE FollowShip SET beFollower = #{beFollower}, follower = #{follower}, isClassmate = #{isClassmate} , areaid = #{areaid} where beFollower=#{beFollower} and follower=#{follower} and areaid = #{areaid} SELECT beFollower , follower , isClassmate , areaid FROM FollowShip WHERE beFollower=#{beFollower} and follower=#{follower} and areaid = #{areaid} SELECT nextval('seq_followShipId') ; SELECT beFollower , follower , isClassmate , areaid FROM FollowShip WHERE beFollower=#{beFollower} SELECT beFollower , follower , isClassmate , areaid FROM FollowShip WHERE follower=#{follower} and areaid = #{areaid} SELECT count(*) FROM FollowShip WHERE beFollower=#{beFollower} SELECT count(*) FROM FollowShip WHERE follower=#{follower} and areaid = #{areaid} delete from FollowShip where follower = #{follower} and beFollower=#{beFollower} and areaid = #{areaid}