sql: easy datetime formatting to varchar

convert(varchar, FIELD_NAME, FORMAT_NUMBER_FROM_CHART)

http://msdn.microsoft.com/en-us/library/aa226054(SQL.80).aspx

sql: get just the hour from a datetime

SELECT DATEADD(hh, 13, DATEADD(dd, 0, DATEDIFF(dd, 0, GETDATE())))

probably a fancier way to keep the hour information, but you can just in an hour variable there to add it back in.

replace getdate() with your date field