Re: Displaying chat by punished users only to themselves (db fiddle attached)

["David G. Johnston" <david.g.johnston@xxxxxxxxx>]

On Wed, May 4, 2022 at 9:12 AM Alexander Farber <alexander.farber@xxxxxxxxx> wrote:

I have tried CROSS JOIN and CASE WHEN (why be greedy, right?):

https://dbfiddle.uk/?rdbms=postgres_14&fiddle=43a33374d15a9330145007702138822c

        WITH myself AS (

            SELECT uid 

            FROM words_social

            WHERE social = in_social

            AND sid = in_sid

            LIMIT 1

        ),

        opponent AS (

             SELECT CASE WHEN player1 = myself.uid THEN player2 ELSE player1 END

             FROM words_games

             WHERE gid = in_gid

        )

        SELECT

                CASE WHEN c.uid = myself.uid THEN 1 ELSE 0 END,

                c.msg

        FROM  myself CROSS JOIN opponent

        WHERE   (c.uid = myself.uid OR NOT opponent.muted)

        ORDER BY c.CREATED ASC;

but the error is:

ERROR:  missing FROM-clause entry for table "myself"

LINE 60:              SELECT CASE WHEN player1 = myself.uid THEN play...

     

What exactly are you trying to do in the "opponent" cte - and why do you think the myself cte is visible to it?

David J.