| From: | "David E(dot) Wheeler" <david(at)justatheory(dot)com> |
|---|---|
| To: | Andres Freund <andres(at)2ndquadrant(dot)com> |
| Cc: | Josh Berkus <josh(at)agliodbs(dot)com>, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Merlin Moncure <mmoncure(at)gmail(dot)com>, Marko Tiikkaja <marko(at)joh(dot)to>, Jan Wieck <JanWieck(at)yahoo(dot)com>, pgsql-hackers Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: PL/pgSQL PERFORM with CTE |
| Date: | 2013-08-29 21:53:23 |
| Message-ID: | 75DC67A7-2A95-49B7-BAAE-F2FE6D9A2921@justatheory.com |
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| Lists: | pgsql-hackers |
On Aug 29, 2013, at 2:48 PM, Andres Freund <andres(at)2ndquadrant(dot)com> wrote:
>> You have yet to supply any arguments which support this position.
>
> I am not convinced that's enough of a reason, but the requirement to use
> PERFORM for SELECTs that aren't stored anywhere actually has prevented
> bugs for me. I am not convinced that's worth the cost since I also have
> been annoyed by it several times, but it's not as crystal clear as you
> paint it.
So now we can revise Josh’s assertion to: “I have seen only tepid, unconvincing arguments which support this position.”
I have thought that PERFORM was useful to mark queries that discard results in the past, but I think now that the mental load is higher, even if it can be fixed with CTEs, it’s more trouble than it’s worth.
Best,
David
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