我想先查询出分卷,然后每个分卷中都显示最新的一个章节,用一句sql语句怎么实现? SELECT v.*,s.subject from volume v LEFT JOIN section s ON s.volid=v.volid 用left join 能不能实现降序的?当然可以,直接跟上 ORDER BY volid DESC//换成你想要的就是,一样的啊
SELECT v.*,s.subject from volume v LEFT JOIN section s ON s.volid=v.volid ORDER BY s.dateline WHERE v.volid>2 DESC ORDER BY v.dateline DESC
这样? 这样报错的
SELECT v.*,s.subject from volume v LEFT JOIN section s ON s.volid=v.volid ORDER BY s.dateline DESC WHERE v.volid>2 ORDER BY v.dateline DESC
这样? 这样报错的 SQL code: SELECT v.*,s.subject from volume v LEFT JOIN section s ON s.volid=v.volid WHERE v.volid>2 ORDER BY v.dateline DESC