| Base function to convert right ascension in degrees to +hh:mm:ss.ss notation. | 
|  SDSS SkyServer function, courtesy Johns Hopkins University. @truncate is 0 (default) if decimal digits to be rounded, 1 to be truncated. @precision is the number of decimal digits, default 3. Example usages: SELECT dbo.fHMSbase(187.25679,1,4) => 12:29:01.6296 SELECT dbo.fHMSbase(187.25679,default,default) => 12:29:01.630  | 
| Name | Type | Length | inout | pnum | 
| @deg | float | 8 | input | 1 | 
| @truncate | int | 4 | input | 2 | 
| @precision | int | 4 | input | 3 | varchar | 32 | output | 1 |