更新时间:2023-11-23 23:04:10
SQLite(和MySQL)支持:
SQLite (and MySQL) support:
SELECT t.name,
MAX(t.lastupdated),
t.status
FROM [table] t
GROUP BY t.name
但是大多数其他数据库将要求您使用:
But most other databases would require you to use:
SELECT a.name, a.lastupdate, a.status
FROM YOUR_TABLE a
JOIN (SELECT t.name, MAX(t.lastupdated) AS max_lastupdated
FROM YOUR_TABLE t
GROUP BY t.name) b ON b.name = a.name
AND b.max_lastupdated = a.lastupdated
...但是,如果一个名称具有多个具有相同最高日期值的记录,则将返回重复项.
...though this will return duplicates if a name has more than one record with the same highest date value.