Re: Avoiding duplication of code via views -- slower? How do people typically do this? - Mailing list pgsql-general

From Jack Christensen
Subject Re: Avoiding duplication of code via views -- slower? How do people typically do this?
Date
Msg-id 511E4F5C.3020506@jackchristensen.com
Whole thread Raw
In response to Re: Avoiding duplication of code via views -- slower? How do people typically do this?  (Joe Van Dyk <joe@tanga.com>)
List pgsql-general
Joe Van Dyk wrote:
>
> Perhaps I fat-fingered something somewhere... I tried that and I got
> this:
> https://gist.github.com/joevandyk/4958906/raw/5561f95ef2b5d82f81ab14913c4d36f6aac3ee0a/gistfile1.txt
>
> The with_filters view uses a different plan.
Interesting. It is avoiding the hash join, but it is still evaluating
the exists column even when it is not referenced at all in the select. I
would have expected the optimizer to remove it entirely.

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