SQL gurus,
I have a table with 4 columns: lid(varchar), value(float),
obstime(datetime), event_id(integer)
I want to find the MAX(value) and the time and date that it occurred
(obstime) in each group of rows where the lid and event_id are the
same. What I have works correctly in identifyin
Try this. Once you know the value you want you have to join back to
find the time of that value.
Select f.Lid, F.Value,F.event_id, f.obstime
From (
SELECT lid, MAX(value) As Value, event_id
FROM flood_ts
GROUP BY lid, event_id
)sub
Join flood f On sub.Value=f.value and f.lid=sub.lid and
sub.event
