Add PRIMARY KEY or UNIQUE directly to the end of the column definition. : Primary Key « Key « SQL / MySQL






  1. SQL / MySQL
  2. Key
  3. Primary Key

Add PRIMARY KEY or UNIQUE directly to the end of the column definition.

     
mysql>
mysql> CREATE TABLE t
    -> (
    ->     id   INT NOT NULL PRIMARY KEY,
    ->     name CHAR(30) NOT NULL
    -> );

mysql>
mysql> drop table t;
Query OK, 0 rows affected (0.00 sec)

mysql>
mysql> CREATE TABLE t
    -> (
    ->     id   INT NOT NULL UNIQUE,
    ->     name CHAR(30) NOT NULL
    -> );
Query OK, 0 rows affected (0.01 sec)

mysql>
mysql> drop table t;
Query OK, 0 rows affected (0.00 sec)








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