MySQL Tutorial/Date Time Functions/ADDDATE

ADDDATE(date,INTERVAL expr unit),

   <source lang="sql">

mysql> mysql> SELECT DATE_ADD("1998-01-02", INTERVAL 31 DAY); +-----------------------------------------+ | DATE_ADD("1998-01-02", INTERVAL 31 DAY) | +-----------------------------------------+ | 1998-02-02 | +-----------------------------------------+ 1 row in set (0.00 sec) mysql> mysql> SELECT ADDDATE("1998-01-02", INTERVAL 31 DAY); +----------------------------------------+ | ADDDATE("1998-01-02", INTERVAL 31 DAY) | +----------------------------------------+ | 1998-02-02 | +----------------------------------------+ 1 row in set (0.00 sec) mysql></source>

ADDDATE(expr,days)

MySQL treats the second argument as an integer number of days to be added to expr.

   <source lang="sql">

mysql> mysql> SELECT ADDDATE("1998-01-02", 31); +---------------------------+ | ADDDATE("1998-01-02", 31) | +---------------------------+ | 1998-02-02 | +---------------------------+ 1 row in set (0.00 sec) mysql></source>