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Re: Query plan for "id IS NULL" on PK - Mailing list pgsql-general

From Peter J. Holzer
Subject Re: Query plan for "id IS NULL" on PK
Date
Msg-id 20230214224304.ykdgobmkqpaygbth@hjp.at
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In response to Re: Query plan for "id IS NULL" on PK  (Rob Sargent <robjsargent@gmail.com>)
Responses Re: Query plan for "id IS NULL" on PK  (Rob Sargent <robjsargent@gmail.com>)
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On 2023-02-14 15:36:32 -0700, Rob Sargent wrote:
> But if the query is supposed to be generic and re-used in a situation where id
> could be null, wouldn't the null id records be fetched every time? 

No, they will never be fetched because of the AND (("id" <= ?)).

        hp

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