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Re: select from grouped data - Mailing list pgsql-novice

From David G. Johnston
Subject Re: select from grouped data
Date
Msg-id CAKFQuwavG_JG63EHyWxY_bM3s08Av1vu=XTzBTywLafUO0-htQ@mail.gmail.com
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In response to select from grouped data  (Roger Mason <rmason@mun.ca>)
Responses Re: select from grouped data
Re: select from grouped data
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The output looks like:

   jid     |    timestamp    | scf |     energy     
------------+-----------------+-----+----------------
 1250_1     | 20210805-114634 |  18 | -1316.43700819
 1250_1     | 20210805-114634 |  17 | -1316.43700825
 1250_1     | 20210805-114634 |  16 |  -1316.4370097
 1250_1     | 20210805-114634 |  15 | -1316.43700991
 1250_1     | 20210805-114634 |  14 | -1316.43699775
 1250_1     | 20210805-114634 |  13 | -1316.43699117
 1250_1     | 20210805-114634 |  12 | -1316.43750771
 1250_1     | 20210805-114634 |  11 | -1316.43805358
 1250_1     | 20210805-114634 |  10 | -1316.43857192
 1250_1     | 20210805-114634 |   9 | -1316.43070942
 1251_1     | 20210806-062539 |  18 | -1316.43700819
 1251_1     | 20210806-062539 |  17 | -1316.43700826
....

What I want is to get (for each group) the energy corresponding to the
maximum value of scf.


SELECT DISTINCT ON (jid) jid, timestamp, scf, energy [...] ORDER BY jid, scf DESC

David J.

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