DROP TRIGGER T_LEAGUE;
DROP TRIGGER T_PLAYER;
DROP TRIGGER T_TEAM;

DROP TABLE TEAMPLAYER;
DROP TABLE PLAYER;
DROP TABLE TEAM;
DROP TABLE LEAGUE;

CREATE TABLE PLAYER
(
    PLAYER_ID VARCHAR(255)     PRIMARY KEY NOT NULL,
    NAME VARCHAR(255),
    POSITION VARCHAR(255),
    SALARY DOUBLE PRECISION NOT NULL,
    VERSION NUMERIC(19)         NOT NULL
);

CREATE TABLE LEAGUE
(
    LEAGUE_ID VARCHAR(255)     PRIMARY KEY NOT NULL,
    NAME VARCHAR(255),
    SPORT VARCHAR(255),
    VERSION NUMERIC(19)         NOT NULL
);

CREATE TABLE TEAM
(
    TEAM_ID VARCHAR(255)     PRIMARY KEY NOT NULL,
    CITY VARCHAR(255),
    NAME VARCHAR(255),
    LEAGUE_ID VARCHAR(255),
    VERSION NUMERIC(19)         NOT NULL,
    FOREIGN KEY (LEAGUE_ID) REFERENCES LEAGUE (LEAGUE_ID)
);

CREATE TABLE TEAMPLAYER
(
    PLAYER_ID VARCHAR(255)     NOT NULL,
    TEAM_ID VARCHAR(255)     NOT NULL,
    CONSTRAINT PK_TEAMPLAYER PRIMARY KEY (PLAYER_ID, TEAM_ID),
    FOREIGN KEY (TEAM_ID)   REFERENCES TEAM (TEAM_ID),
    FOREIGN KEY (PLAYER_ID) REFERENCES PLAYER (PLAYER_ID)
);

commit;

CREATE TRIGGER T_LEAGUE
   NO CASCADE
   BEFORE UPDATE ON LEAGUE
   REFERENCING
      NEW AS N_ROW
      OLD AS O_ROW
   FOR EACH ROW MODE DB2SQL
   WHEN (N_ROW.VERSION = O_ROW.VERSION)
      SET N_ROW.VERSION = O_ROW.VERSION + 1
;

CREATE TRIGGER T_PLAYER
   NO CASCADE
   BEFORE UPDATE ON PLAYER
   REFERENCING
      NEW AS N_ROW
      OLD AS O_ROW
   FOR EACH ROW MODE DB2SQL
   WHEN (N_ROW.VERSION = O_ROW.VERSION)
      SET N_ROW.VERSION = O_ROW.VERSION + 1
;

CREATE TRIGGER T_TEAM
   NO CASCADE
   BEFORE UPDATE ON TEAM
   REFERENCING
      NEW AS N_ROW
      OLD AS O_ROW
   FOR EACH ROW MODE DB2SQL
   WHEN (N_ROW.VERSION = O_ROW.VERSION)
      SET N_ROW.VERSION = O_ROW.VERSION + 1
;

commit;

quit;