chosensongs INTEGER NOT NULL,
numqualifying INTEGER,
+ UNIQUE (tournament, player),
PRIMARY KEY (tournament, round)
);
LANGUAGE SQL
STABLE
RETURNS NULL ON NULL INPUT;
+
+-- get_max_score_for_players(tournament, round, playmode)
+CREATE FUNCTION get_max_score_for_players(integer, integer, varchar) RETURNS SETOF max_score
+ AS $$
+ SELECT player,
+ (
+ SELECT feetrating
+ FROM songratings
+ WHERE machine=( -- only find songs on the machine we use
+ SELECT machine FROM tournaments WHERE tournament=$1
+ )
+ AND song NOT IN ( -- not a song that has been in elimination or seeding
+ SELECT song FROM scores
+ WHERE tournament=$1
+ AND song IS NOT NULL
+ AND parallel=0
+ AND chosen='f'
+ )
+ AND (player,song) NOT IN ( -- not a song the player has chosen before, or is a random song in this round
+ SELECT player,song FROM scores
+ WHERE tournament=$1
+ AND song IS NOT NULL
+ AND ( chosen='t' OR round=$2 )
+ )
+ AND playmode=$3
+ ORDER BY feetrating DESC LIMIT 1
+ ) * 1000 AS max_score FROM tournamentparticipation WHERE tournament=$1;
+$$
+ LANGUAGE SQL
+ STABLE
+ RETURNS NULL ON NULL INPUT;
+
+-- Find out, for each player in the group, what the maximum remaining score
+-- possibly can be, using get_max_score_for_{songs,players} (the first for
+-- selected but not played songs, the second for random songs that have not
+-- been chosen yet).
+--
+-- This doesn't solve problems we'd face with more than one chosen song, but it
+-- should be good enough.
+
+CREATE TYPE minmax_score AS (
+ player INTEGER,
+ min_score INTEGER,
+ max_score INTEGER
+);
+
+-- get_minmax_score_for_players(tournament, round, parallel, playmode)
+CREATE FUNCTION get_minmax_score_for_players(integer, integer, integer, varchar) RETURNS SETOF minmax_score
+ AS $$
+DECLARE
+ ret minmax_score;
+ tp RECORD;
+ ts RECORD;
+BEGIN
+ FOR tp IN SELECT player FROM roundparticipation WHERE tournament=$1 AND round=$2 AND parallel=$3 LOOP
+ ret.player := tp.player;
+ ret.min_score := 0;
+ ret.max_score := 0;
+
+ FOR ts IN SELECT song,score FROM scores WHERE tournament=$1 AND round=$2 AND parallel=$3 AND player=tp.player LOOP
+ IF ts.score IS NOT NULL THEN
+ -- score is already given
+ ret.min_score := ret.min_score + ts.score;
+ ret.max_score := ret.max_score + ts.score;
+ ELSE
+ IF ts.song IS NOT NULL THEN
+ ret.max_score := ret.max_score + ( SELECT max_score FROM get_max_score_for_songs($1, $4) WHERE song=ts.song );
+ ELSE
+ ret.max_score := ret.max_score + ( SELECT max_score FROM get_max_score_for_players($1, $2, $4) WHERE song=tp.player );
+ END IF;
+ END IF;
+ END LOOP;
+
+ RETURN NEXT ret;
+ END LOOP;
+ RETURN;
+END;
+$$
+ LANGUAGE plpgsql
+ STABLE
+ RETURNS NULL ON NULL INPUT;
+
+-- use the minmax_score as a basis for finding best and worst possible ranks
+CREATE TYPE minmax_rank AS (
+ player INTEGER,
+ best_rank INTEGER,
+ worst_rank INTEGER
+);
+
+-- get_minmax_score_for_players(tournament, round, parallel, playmode)
+CREATE TABLE temp_minmax (
+ player INTEGER,
+ min_score INTEGER,
+ max_score INTEGER
+);
+
+CREATE FUNCTION get_minmax_rank_for_players(integer, integer, integer, varchar) RETURNS SETOF minmax_rank
+ AS $$
+DECLARE
+ ret minmax_rank;
+ tp RECORD;
+BEGIN
+ INSERT INTO temp_minmax SELECT * FROM get_minmax_score_for_players($1, $2, $3, $4);
+
+ FOR tp IN SELECT * FROM temp_minmax LOOP
+ ret.player = tp.player;
+ ret.best_rank = 1 + ( SELECT COUNT(*) FROM temp_minmax WHERE min_score > tp.max_score AND player<>tp.player);
+ ret.worst_rank = 1 + ( SELECT COUNT(*) FROM temp_minmax WHERE max_score >= tp.min_score AND player<>tp.player );
+
+ RETURN NEXT ret;
+ END LOOP;
+ TRUNCATE temp_minmax;
+ RETURN;
+END;
+ $$
+ LANGUAGE plpgsql
+ VOLATILE -- not really, but needed for the TEMPORARY TABLE
+ RETURNS NULL ON NULL INPUT;
+
+-- get_minmax_score_for_players(tournament, playmode)
+CREATE TYPE minmax_rank_entire_tournament AS (
+ round INTEGER,
+ parallel INTEGER,
+ player INTEGER,
+ best_rank INTEGER,
+ worst_rank INTEGER
+);
+CREATE FUNCTION get_minmax_rank_for_players(integer, varchar) RETURNS SETOF minmax_rank_entire_tournament
+ AS $$
+DECLARE
+ ret minmax_rank_entire_tournament;
+ tr record;
+ tp record;
+BEGIN
+ FOR tr IN SELECT * FROM groups WHERE tournament=$1 LOOP
+ ret.round = tr.round;
+ ret.parallel = tr.parallel;
+
+ FOR tp IN SELECT * FROM get_minmax_rank_for_players($1, tr.round, tr.parallel, $2) LOOP
+ ret.player = tp.player;
+ ret.best_rank = tp.best_rank;
+ ret.worst_rank = tp.worst_rank;
+ RETURN NEXT ret;
+ END LOOP;
+ END LOOP;
+ RETURN;
+END;
+ $$
+ LANGUAGE plpgsql
+ STABLE
+ RETURNS NULL ON NULL INPUT;
projects / ccbs / blobdiff