27.3.6.12 MySQL Functions

The following SQL built-in functions can be called directly from the mysql namespace. These are described in the following list, along with their analogous SQL functions:

• rand() (MySQL RAND()): Returns a random floating-point value v in the range 0 <= v < 1.0.

• sleep(seconds) (MySQL SLEEP()): Pauses for seconds seconds, then returns 0.

• uuid() (MySQL UUID()): Returns a Universal Unique Identifier (UUID).

• isUUID(argument) (MySQL IS_UUID()): Returns 1 if the argument is a valid string-format UUID, 0 if it is not a valid UUID, and NULL if the argument is NULL.