A time value can be made into a literal using a predefined character string representation by connecting the hour (hh), minute (mm), and second (ss) with colons (:), as 'hh:mm:ss', where the hour (hh), minute (mm), and second (ss) fields must be zero-filled on the left as necessary.
Any time literal in a predefined character string representation is converted into the time data type when it is specified as an argument in the TIME scalar function or where time data is required.
An example of turning a time value into a predefined character string representation is given as follows: