I have the following table:
Date | Time | Value | ReceivedTime 2022-04-01| 00:59:59 | 5 | 00:30:15 2022-04-01| 13:59:59 | 15 | 13:30:00 2022-04-02| 21:59:59 | 5 | 21:30:15 2022-04-02| 22:59:59 | 25 | 22:25:15 2022-04-02| 23:59:59 | 25 | 23:00:15 2022-04-03| 14:59:59 | 50 | 00:30:15 2022-04-03| 15:59:59 | 555 | 00:30:15 2022-04-03| 16:59:59 | 56 | 00:30:15
I want to get maximum value along with Date,ReceivedTime.
Expected Result:
Date | Value | ReceivedTime 2022-04-01 | 15 | 13:30:00 2022-04-02 | 25 | 23:00:15 2022-04-03 | 555 | 00:30:15
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Answer
This answer assumes that, in the event of two or more records being tied on a given day for the same highest value, you want to retain the single record with the most recent ReceivedTime
. We can use DISTINCT ON
here:
SELECT DISTINCT ON (Date) Date, Value, ReceivedTime FROM yourTable ORDER BY Date, Value DESC, ReceivedTime DESC;