获取多个标签的最后一个值

我需要获取每个sourcetag的最后一个值。请让我知道此查询是否正确。

SELECT * FROM "measurement1" where rig = '338' and ( sourcetag = 't1' or sourcetag = 
't2' or sourcetag = 't3' ) group by sourcetag order by time desc limit 1
chibi452 回答:获取多个标签的最后一个值

差不多。只需将SELECT *更改为SELECT last(*)

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