How to simulate regular expressions in LINQ-to-SQL

Question

I have a database table with customer account numbers. Within the same table are test accounts that don\'t match the production formatting: say, \'A1111\' is production but

Answer 1

Are you using LINQ-to-SQL? If so, MSDN forums state the following:

LINQ to SQL cannot translate regular expressions to SQL because there's no support for Regex at the SQL end.

It does give 3 alternatives though.