MySQL 建表语法

MySQL 建表语法

1、最简单的：

CREATE   TABLE  t1(
   id  int  not  null ,
   name  char ( 20 )
);

2、带主键的：

a：

CREATE   TABLE  t1(
   id  int  not  null primary key ,
   name  char ( 20 )
);

b：复合主键

CREATE   TABLE  t1(
   id  int  not  null ,
   name char ( 20 ),
   primary key (id,name)
);

3、带默认值的：

CREATE   TABLE  t1(
   id  int  not  null default 0 primary key ,
   name char ( 20 ) default '1'
);

转贴的：

CREATE   TABLE  PLAYERS
       (PLAYERNO       INTEGER   NOT   NULL   PRIMARY   KEY ,
        NAME           CHAR ( 15 )  NOT   NULL ,
        INITIALS       CHAR ( 3 )  NOT   NULL ,
        BIRTH_DATE    DATE,
        SEX            CHAR ( 1 )  NOT   NULL
                      CHECK (SEX  IN  ( ' M ' , ' F ' )),
        JOINED         SMALLINT   NOT   NULL
                      CHECK (JOINED  >   1969 ) ,
        STREET         CHAR ( 30 )  NOT   NULL ,
        HOUSENO        CHAR ( 4 ),
        POSTCODE       CHAR ( 6 )  CHECK (POSTCODE  LIKE   ' ______ ' ),
        TOWN           CHAR ( 10 )  NOT   NULL ,
        PHONENO        CHAR ( 13 ),
        LEAGUENO       CHAR ( 4 ))
;
CREATE   TABLE  TEAMS
       (TEAMNO         INTEGER   NOT   NULL   PRIMARY   KEY ,
        PLAYERNO       INTEGER   NOT   NULL ,
        DIVISION       CHAR ( 6 )    NOT   NULL
                      CHECK (DIVISION  IN  ( ' first ' , ' second ' )),
         FOREIGN   KEY    (PLAYERNO)  REFERENCES  PLAYERS (PLAYERNO))
;
CREATE   TABLE  MATCHES
       (MATCHNO        INTEGER   NOT   NULL   PRIMARY   KEY ,
        TEAMNO         INTEGER   NOT   NULL ,
        PLAYERNO       INTEGER   NOT   NULL ,
        WON            SMALLINT   NOT   NULL
                      CHECK (WON  BETWEEN   0   AND   3 ),
        LOST           SMALLINT   NOT   NULL
                      CHECK (LOST  BETWEEN   0   AND   3 ),
         FOREIGN   KEY  (TEAMNO)  REFERENCES  TEAMS (TEAMNO),
         FOREIGN   KEY  (PLAYERNO)  REFERENCES  PLAYERS (PLAYERNO))
;
CREATE   TABLE  PENALTIES
       (PAYMENTNO      INTEGER   NOT   NULL   PRIMARY   KEY ,
        PLAYERNO       INTEGER   NOT   NULL ,
        PAYMENT_DATE DATE  NOT   NULL
                      CHECK (PAYMENT_DATE  >=  DATE( ' 1969-12-31 ' )),
        AMOUNT         DECIMAL ( 7 , 2 )    NOT   NULL
                      CHECK  (AMOUNT  >   0 ),
         FOREIGN   KEY  (PLAYERNO)  REFERENCES  PLAYERS (PLAYERNO))
;
CREATE   TABLE  COMMITTEE_MEMBERS
       (PLAYERNO       INTEGER   NOT   NULL ,
        BEGIN_DATE    DATE  NOT   NULL ,
        END_DATE      DATE,
        POSITION       CHAR ( 20 ),
         PRIMARY   KEY    (PLAYERNO, BEGIN_DATE),
         FOREIGN   KEY    (PLAYERNO)  REFERENCES  PLAYERS (PLAYERNO),
         CHECK (BEGIN_DATE  <  END_DATE),
         CHECK (BEGIN_DATE  >=  DATE( ' 1990-01-01 ' )))
;