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From: Guyren Howe <[email protected]>
To: PG-General Mailing List <[email protected]>
Subject: nth_value out of more than n values returns null
Date: Mon, 4 Nov 2024 15:17:16 -0800
Message-ID: <3ed0759d-c332-4f96-a147-499a694e9204@Spark> (raw)

This query:

SELECT NTH_VALUE(id, 5000000) OVER (ORDER BY created_at, id ASC) FROM table

in a table where SELECT COUNT(*) returns a value a few thousand over 5 million, where id is the primary key, returns null.

The inclusion of the primary key should make the order by a total order. So there should be a 5 millionth row.

How can this happen?

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