SELECT * FROM vip_group_class_group_mapper WHERE id_ = #{id} SELECT * FROM vip_group_class_group_mapper ORDER BY id_ INSERT INTO vip_group_class_group_mapper (id_,vip_group_id_,class_group_id_,create_time_) VALUES(#{id},#{vipGroupId},#{classGroupId},now()) UPDATE vip_group_class_group_mapper vip_group_id_ = #{vipGroupId}, id_ = #{id}, class_group_id_ = #{classGroupId}, WHERE id_ = #{id} DELETE FROM vip_group_class_group_mapper WHERE id_ = #{id} SELECT * FROM vip_group_class_group_mapper ORDER BY id_ SELECT COUNT(*) FROM vip_group_class_group_mapper SELECT * FROM vip_group_class_group_mapper WHERE vip_group_id_=#{vipGroupId} SELECT cg.* FROM vip_group_class_group_mapper vgcgm LEFT JOIN class_group cg ON vgcgm.class_group_id_=cg.id_ WHERE vgcgm.vip_group_id_=#{vipGroupId} FOR UPDATE SELECT cg.* FROM vip_group_class_group_mapper vgcgm LEFT JOIN class_group cg ON vgcgm.class_group_id_=cg.id_ WHERE vgcgm.vip_group_id_ IN #{vipGroupId}