1. ... action='SKIP' as isskip ... then you can group on and count the skip moves. If there is 6 of them the game ends.
2. ... sum(case when action='SKIP' then 1 else 0 end) ... If the result is 6 the game ends
I am trying
SELECT SUM(CASE WHEN action='skip' THEN 1 ELSE 0 END) FROM words_moves GROUP BY action ORDER BY played DESC LIMIT 6 INTO _sum;
RAISE NOTICE '_sum = %', _sum;
IF _sum = 6 THEN _finished = CURRENT_TIMESTAMP; END IF;
but get the error -
org.postgresql.util.PSQLException: ERROR: column "words_moves.played" must appear in the GROUP BY clause or be used in an aggregate function| Where: PL/pgSQL function words_skip_game(integer,integer) line 27 at SQL statement
Regards
Alex
P.S: Here is the table in question
Table "public.words_moves" Column | Type | Modifiers --------+--------------------------+----------------------------------------------------------- mid | integer | not null default nextval('words_moves_mid_seq'::regclass) action | words_action | not null gid | integer | not null uid | integer | not null played | timestamp with time zone | not null tiles | jsonb | score | integer | Indexes: "words_moves_pkey" PRIMARY KEY, btree (mid) Check constraints: "words_moves_score_check" CHECK (score > 0) Foreign-key constraints: "words_moves_gid_fkey" FOREIGN KEY (gid) REFERENCES words_games(gid) ON DELETE CASCADE "words_moves_uid_fkey" FOREIGN KEY (uid) REFERENCES words_users(uid) ON DELETE CASCADE Referenced by: TABLE "words_games" CONSTRAINT "words_mid_fk" FOREIGN KEY (mid) REFERENCES words_moves(mid) TABLE "words_scores" CONSTRAINT "words_scores_mid_fkey" FOREIGN KEY (mid) REFERENCES words_moves(mid) ON DELETE CASCADE