DRILL-6361: Revised typeOf() function versions Added more unit tests.
Updated to handle VARDECIMAL The VARDECIMAL type was recently added t…
DRILL-6361: Revised typeOf() function versionsAdded more unit tests.Updated to handle VARDECIMALThe VARDECIMAL type was recently added to Drill. Added support for this type. The sqlTypeOf() function now returns DECIMAL(p, s) for precision p, scale s.closes #1242