Mysql:関数の2:miscellaneous functions

Miscellaneous Functions
Name
Description
DEFAULT()
Return the default value for a table column
GET_LOCK()
Get a named lock
INET_ATON()
Return the numeric value of an IP address
INET_NTOA()
Return the IP address from a numeric value
IS_FREE_LOCK()
Checks whether the named lock is free
IS_USED_LOCK() (v4.1.0)
Checks whether the named lock is in use. Return connection identifier if true.
MASTER_POS_WAIT()
Block until the slave has read and applied all updates up to the specified position
NAME_CONST() (v5.0.12)
Causes the column to have the given name
RAND()
Return a random floating-point value
RELEASE_LOCK()
Releases the named lock
SLEEP() (v5.0.12)
Sleep for a number of seconds
UUID_SHORT() (v5.1.20)
Return an integer-valued universal identifier
UUID() (v4.1.2)
Return a Universal Unique Identifier (UUID)
VALUES() (v4.1.1)
Defines the values to be used during an INSERT