Re: How to optimize SELECT query with multiple CASE statements?

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От
Geoff Winkless
Тема
Re: How to optimize SELECT query with multiple CASE statements?
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Msg-id
CAEzk6feEgc-sbSteQOkEqq5-6gebp7P8c9Tnb6AxwU9J-zcn1w@mail.gmail.com
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How to optimize SELECT query with multiple CASE statements? Alexander Farber <alexander.farber@gmail.com>
Re: How to optimize SELECT query with multiple CASE statements? Adrian Klaver <adrian.klaver@aklaver.com>
Re: How to optimize SELECT query with multiple CASE statements? Geoff Winkless <pgsqladmin@geoff.dj>
Re: How to optimize SELECT query with multiple CASE statements? Alexander Farber <alexander.farber@gmail.com>
Re: How to optimize SELECT query with multiple CASE statements? Geoff Winkless <pgsqladmin@geoff.dj>
Re: How to optimize SELECT query with multiple CASE statements? Alexander Farber <alexander.farber@gmail.com>
Re: How to optimize SELECT query with multiple CASE statements? Geoff Winkless <pgsqladmin@geoff.dj>
Re: How to optimize SELECT query with multiple CASE statements? "David G. Johnston" <david.g.johnston@gmail.com>
On 31 October 2016 at 15:21, Geoff Winkless  wrote:
> LEFT JOIN words_social s1 ON s1.uid = in_uid
> LEFT JOIN words_social s2 ON CASE WHEN g.player1 = in_uid THEN
> g.player2 ELSE g.player1

Ugh.

Of course I meant

LEFT JOIN words_social s1 ON s1.uid = in_uid
LEFT JOIN words_social s2 ON s2.uid = CASE WHEN g.player1 = in_uid
THEN g.player2 ELSE g.player1 END

But I expect you know that...

Geoff

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