MySQL - 如果表 A 左连接到表 B，我如何按表 B 中的字段进行排序？

Question

这是我的 SQL 查询:

    SELECT  pts.pts_id, 
            pts.pts_name, 
            meds.*
    FROM    pts
            LEFT JOIN meds
            ON pts.pts_id = meds.pts_id_fk
    WHERE   pts.id_fk = $id
      AND   pts_current = 1

表pts(即表A)具有以下数据:

pts_id   time
1        Joe
2        Jack
3        Jill

表meds(即表B)具有以下数据:

pts_id_fk   time
1           7AM
1           8AM
1           9AM
2           7AM
2          10AM
3          11AM

我想根据时间ORDER BY此查询的结果。

有什么建议吗？

Answer 1

SELECT  pts.pts_id, 
            pts.pts_name, 
            meds.*
    FROM    pts
            LEFT JOIN meds
            ON pts.pts_id = meds.pts_id_fk
    WHERE   pts.id_fk = $id
      AND   pts_current = 1

ORDER BY pts.pts_id, meds.time