insert into fav(favid , usersid , articleid , addtime ) values(#{favid} , #{usersid} , #{articleid} , #{addtime} ) update fav set usersid=#{usersid} , articleid=#{articleid} , addtime=#{addtime} where favid=#{favid} delete from fav where favid = #{favid} select a.* , b.username , c.title from fav a , users b , article c where 1=1 and a.usersid = b.usersid and a.articleid = c.articleid order by favid desc select a.* , b.username , c.title from fav a , users b , article c where 1=1 and a.usersid = b.usersid and a.articleid = c.articleid and favid=#{favid} order by favid desc select a.* , b.username , c.title from fav a , users b , article c where 1=1 and a.usersid = b.usersid and a.articleid = c.articleid and a.usersid = #{usersid} and a.articleid = #{articleid} and a.addtime = #{addtime} select a.* , b.username , c.title from fav a , users b , article c where 1=1 and a.usersid = b.usersid and a.articleid = c.articleid and b.username like CONCAT('%', CONCAT(#{usersid}, '%')) and c.title like CONCAT('%', CONCAT(#{articleid}, '%')) and a.addtime like CONCAT('%', CONCAT(#{addtime}, '%'))