David, thanks but what do you mean by the last comment - On Wed, May 4, 2022 at 7:44 PM David G. Johnston <david.g.johns...@gmail.com> wrote:
> Using (SELECT uid FROM myself) provides the same result without the > from/join reference; the usage in the case and the where clause could be > rewritten to use opponent.uid so myself.uid only appears once. > > I have applied your first 2 comments in https://dbfiddle.uk/?rdbms=postgres_14&fiddle=c3982c2b5e71369f3c92ee0c06dc29bf WITH myself AS ( SELECT uid FROM words_social WHERE social = in_social AND sid = in_sid ) SELECT CASE WHEN c.uid = myself.uid THEN 1 ELSE 0 END, c.msg FROM words_chat c JOIN myself ON TRUE JOIN words_games g USING (gid) JOIN words_users opponent ON (opponent.uid IN (g.player1, g.player2) AND opponent.uid <> myself.uid) WHERE c.gid = in_gid -- always show myself my own chat messages AND c.uid = myself.uid -- otherwise only show messages by not muted opponents OR NOT opponent.muted ORDER BY c.created ASC; but where to put the (SELECT uid FROM myself), I do not understand?
