I use this when I need to join two fields. One has a date, the other has a time.   IF EXISTS ( SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N '[util].[uf_MergeDate2Time]' ) AND type in (N 'FN' , N 'IF' , N 'TF' , N 'FS' , N 'FT' )) ...