insert into comment (co_page_path, co_content, co_date, co_pid, co_from_author_id, co_to_author_id, co_status) VALUES (#{pagePath}, #{content}, now(), #{pid}, #{fromUser.id}, #{toUser.id}, 0) update comment set co_content=#{content} where co_id = #{id} update comment set co_status = 3 where co_id = #{id} update comment set co_status = 3 where co_page_path = #{path} SELECT EXISTS(SELECT * FROM comment WHERE co_id = #{id}) select * from commentView where commentId = #{sqid} select * from commentView where fromAuthorId = #{id} select * from commentView where pid = #{pid} select * from commentView where pagePath = #{pagePath} select * from commentView where pagePath = #{pagePath} and fromAuthorId = #{userId} select * from commentView where pagePath = #{pagePath} and pid = #{pid} and status = 0 select count(*) from commentView where pagePath = #{pagePath} select * from commentView order by commentId desc limit 1 select count(*) from comment where co_status = 0;