INSERT ON DUPLICATE KEY UPDATE : Insert « Insert Delete Update « SQL / MySQL

1. SQL / MySQL
2. Insert Delete Update
3. Insert

INSERT ON DUPLICATE KEY UPDATE

     
mysql>
mysql>
mysql>
mysql> CREATE   TABLE TEAMS
    ->         (TEAMNO         INTEGER      NOT NULL,
    ->          EmployeeNO       INTEGER      NOT NULL,
    ->          DIVISION       CHAR(6)      NOT NULL,
    ->          PRIMARY KEY    (TEAMNO)             );
Query OK, 0 rows affected (0.00 sec)

mysql>
mysql>
mysql> INSERT INTO TEAMS VALUES (1,  6, 'first');
Query OK, 1 row affected (0.00 sec)

mysql> INSERT INTO TEAMS VALUES (2, 27, 'second');
Query OK, 1 row affected (0.00 sec)

mysql>
mysql> INSERT INTO TEAMS VALUES (1, 39, 'second')
    -> ON DUPLICATE KEY UPDATE EmployeeNO = 39, DIVISION='second';
Query OK, 2 rows affected (0.00 sec)

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

mysql>

   
    
    
    
    
  

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