Mega Code Archive

 

Categories / MySQL Tutorial / Math Numeric Functions

 

LOG(X), LOG(B,X)

mysql> mysql> SELECT LOG(2); +------------------+ | LOG(2)           | +------------------+ | 0.69314718055995 | +------------------+ 1 row in set (0.00 sec) mysql> mysql> SELECT LOG(-2); +---------+ | LOG(-2) | +---------+ |    NULL | +---------+ 1 row in set (0.00 sec) mysql>