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

On Wed, May 4, 2022 at 9:12 AM Alexander Farber <alexander(dot)farber(at)gmail(dot)com>
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.