Subject isnumeric() in Firebird
Here's a table:

Create table foo (
bar varchar(25)
.. Other fields ...

bar has some entries that are legal numbers and some that are not. I'd like
to find the
largest value for bar considering only those rows where bar is a legal
number. In some
databases, I could say this:

Select max(bar) from foo where isnumeric(bar).

It appears that Firebird has no isnumeric built-in. Is there something else
I could use?
A UDF somewhere, maybe?

Michael D. Spence
Mockingbird Data Systems, Inc.

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