The following request executes HELP COLUMN on 3 expressions, but no actual columns. Note that report does not include column names, but instead lists the data types, nullability, and output format.
HELP COLUMN 1+10, 10.1+1, 'asdf'||'asd1'; *** Help information returned. 3 rows. *** Total elapsed time was 1 second. Column Name Type Nullable Format --------------------------- ---- -------- ------------------------- I Y -(10)9 D Y ---------------.9 CV Y X(8)