Re: Displaying chat by punished users only to themselves (db fiddle attached) - Mailing list pgsql-general

From David G. Johnston
Subject Re: Displaying chat by punished users only to themselves (db fiddle attached)
Date
Msg-id CAKFQuwaoJ4rKbWX+f20tF3+UeeGpr=P+RBCY1HxELpMoJ77XRA@mail.gmail.com
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In response to Re: Displaying chat by punished users only to themselves (db fiddle attached)  (Alexander Farber <alexander.farber@gmail.com>)
Responses Re: Displaying chat by punished users only to themselves (db fiddle attached)
Re: Displaying chat by punished users only to themselves (db fiddle attached)
List pgsql-general
On Wed, May 4, 2022 at 8:36 AM Alexander Farber <alexander.farber@gmail.com> wrote:
David, I try then the following -

On Wed, May 4, 2022 at 5:28 PM David G. Johnston <david.g.johnston@gmail.com> wrote:
You missed quoting the part where I describe the on clauses you need to distinguish between "them" and "me"

Me: u.uid in (player...) and (s.uid = u.uid)
Them: u.uid in (player...) and (s.uid <> u.uid)



        SELECT
                CASE WHEN c.uid = s.uid THEN 1 ELSE 0 END,
                c.msg
        FROM    words_chat c 
        JOIN    words_games g USING (gid) 
        JOIN    words_users myself ON (myself.uid IN (g.player1, g.player2) AND myself.uid = s.uid) 
        JOIN    words_users opponent ON (opponent.uid IN (g.player1, g.player2) AND myself.uid <> s.uid) 
        JOIN    words_social s ON (s.uid = myself.uid)
        WHERE   c.gid    = in_gid
        AND     s.social = in_social
        AND     s.sid    = in_sid
        AND     (c.uid = myself.uid OR NOT opponent.muted)
        
        ORDER BY c.CREATED ASC;

And get the syntax error which don't quite understand:

ERROR:  missing FROM-clause entry for table "s"
LINE 57: ...yself.uid IN (g.player1, g.player2) AND myself.uid = s.uid) 
                                                                 ^

Probably because "myself" needs "s" and vice versa?


Well, that is basically why I was going on about the oddity of having social be a part of the main query.  Personally I would write it as "myself.uid = in_uid", but you don't have an in_uid to reference.  Decide how you want to do something equivalent.

David J.

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