I agree on the ISNUMERIC. They should add functions ISMONEY, ISDECIMAL, ISINT, ISBIGINT, etc. Also ISSMALLDATETIME, ISDATETYPE, ISDATETIME2, etc.

You could use an expression to calculate the file name, if the naming is consistent.

If you feel you cannot create a naming rule that would always work, you...

Great article. Glad to see there are separate date and time types.

I hope there will be more Is% functions. I hate to test a value with IsDate then...