>Hey all
>
>Some time ago I think Fabio Lunardon demonstrated using fsize to check for the presence of a field. What thread was that? I can't find it though I looked.
>
>Considering the need to manage SET COMPATIBLE for a UDF to use FSIZE I can't see it being the fastest way.
>
>I have used a UDF based on TYPE() and it is faster than a UDF using FSIZE that also handles setting and resetting SET COMPATIBLE. I think I found FIELD() is faster.
>
>There is another consideration. Using a UDF can be slow, so using an idea that is in my FoxPro Advisor article: http://advisor.com/doc/17440, the command that can detect a field with the fewest external dependencies could be directly injected into code. It seems the easiest and fastest is to use FIELD().
>
>Did FIELD() always accept the fieldname and alias?

Probably best one is:
field(upper(m.Field)) == upper(m.Field)

fsize() is better than Type() thinking reliability. Afields() + ascan() is yet one of the best IMHO.
Cetin