Good evening, I still have a problem with my JOIN expression - when I add more games, then messages from other games are displayed:
https://dbfiddle.uk/?rdbms=postgres_14&fiddle=e2ff211f59090d1eeab879498148f907 CREATE OR REPLACE FUNCTION words_get_chat( in_gid integer, in_uid integer ) RETURNS TABLE ( out_mine integer, out_game text, out_msg text ) AS $func$ SELECT CASE WHEN c.uid = in_uid THEN 1 ELSE 0 END, 'game #' || c.gid, c.msg FROM words_chat c JOIN words_games g USING (gid) JOIN words_users opponent ON (opponent.uid IN (g.player1, g.player2) AND opponent.uid <> in_uid) WHERE c.gid = in_gid -- always show myself my own chat messages AND c.uid = in_uid -- otherwise only show messages by not muted opponents OR NOT opponent.muted ORDER BY c.created ASC; $func$ LANGUAGE sql; I have tried making the JOIN words_users opponent even more restrictive with: JOIN words_users opponent ON (opponent.uid IN (g.player1, g.player2) AND in_uid IN (g.player1, g.player2) AND opponent.uid <> in_uid) but still messages from the game #20 are displayed, even though I pass in_gid = 10 Best regards Alex