Is it possible to add a function to Oracle?

I got to thinking about this because someone elsewheres asked about a grep function in Oracle (select * from table where grep( '^abc.*xyz$', field ) - or some such). This example can be done without regexp, but the ideal is to be able to use all of regular expressions to find matching data. If a function could be added there are plenty of regexp code that could be used to do it. Received on Tue Jan 09 2001 - 15:13:29 CST