PRAGMA foreign_keys = ON;

PRAGMA writable_schema = 1;
DELETE FROM sqlite_master WHERE type IN ("table", "index", "trigger");
PRAGMA writable_schema = 0;
VACUUM;

CREATE TABLE "matches" (
"loser_id" INT,
"winner_id" INT,
FOREIGN KEY ("loser_id") REFERENCES "players"("player_id"),
FOREIGN KEY ("winner_id") REFERENCES "players"("player_id")
);

CREATE TABLE "players" (
"player_id" INT UNIQUE,
PRIMARY KEY ("player_id")
);

CREATE TABLE "rankings" (
"player_id" INT,
FOREIGN KEY ("player_id") REFERENCES "players"("player_id")
);





INSERT INTO "players" VALUES ("1");
INSERT INTO "players" VALUES ("2");
INSERT INTO "players" VALUES ("3");
INSERT INTO "players" VALUES ("4");
INSERT INTO "players" VALUES ("5");
INSERT INTO "players" VALUES ("6");
INSERT INTO "players" VALUES ("7");
INSERT INTO "players" VALUES ("8");
INSERT INTO "players" VALUES ("9");
INSERT INTO "players" VALUES ("10");
INSERT INTO "matches" VALUES ("1", "2");
INSERT INTO "matches" VALUES ("3", "4");
INSERT INTO "matches" VALUES ("5", "6");
INSERT INTO "matches" VALUES ("7", "8");
INSERT INTO "matches" VALUES ("9", "10");
INSERT INTO "matches" VALUES ("2", "3");
INSERT INTO "matches" VALUES ("4", "5");
INSERT INTO "matches" VALUES ("6", "7");
INSERT INTO "matches" VALUES ("8", "9");
INSERT INTO "matches" VALUES ("1", "5");
INSERT INTO "matches" VALUES ("2", "6");
INSERT INTO "matches" VALUES ("3", "7");
INSERT INTO "matches" VALUES ("4", "8");
INSERT INTO "matches" VALUES ("9", "1");
INSERT INTO "matches" VALUES ("10", "2");
INSERT INTO "rankings" VALUES ("1");
INSERT INTO "rankings" VALUES ("2");
INSERT INTO "rankings" VALUES ("3");
INSERT INTO "rankings" VALUES ("4");
INSERT INTO "rankings" VALUES ("5");
INSERT INTO "rankings" VALUES ("6");
INSERT INTO "rankings" VALUES ("7");
INSERT INTO "rankings" VALUES ("8");
INSERT INTO "rankings" VALUES ("9");
INSERT INTO "rankings" VALUES ("10");