Efficient ISNUMERIC() replacements on SQL Server?

Question

So I just spent 5 hours troubleshooting a problem which turned out to be due not only to the old unreliable ISNUMERIC but it looks like my problem only appears

Answer 1

Following the .NET CLR route, you could go with a regular expression, particularly if you expect a certain range of numbers.

SQL 2005 and Regular Expressions