Is there a recommended, high performance method to check for subdomains? Something like: - www.google.com is subdomain of google.com - ilikegoogle.com is not subdomain of google.com There are many ways to do this (lowercase and reverse the string, append a '.' if not there, append a '%', and do a LIKE). But I'm looking for one that will perform well when the master domain list is an indexed field in a table, and when the possible subdomain is either an individual value, or a field in a table for a join (potentially indexed). -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
