CURTIME()
Returns the current time as a value in the format HH:MM::SS or
HHMMSS.uuuuuu, depending on whether the function is used in a string
or numeric context. The value is expressed using the current time
zone. When the current time is 11:56:23, this code returns the values
11:56:23 and 11:56:23.000000:
SELECT CURTIME() + 0;