What database are you using? You could do this with regular SQL, but it would by a costly operation, for PostgreSQL we're using the prefix module: http://pgfoundry.org/projects/prefix/
You can then match the closest prefix by using something like "WHERE myprefix_col @> caller_destination_number ORDER BY LENGTH (myprefix_col::text) LIMIT 1;" Best regards, Even André On 13. okt. 2009, at 23.53, Diego Viola wrote: > Hello, > > I'm trying to write a post-paid billing script, I have the CDR on my > database and also a "rates" table, the CDR contains fields like > caller_destination_number, variable_duration, etc. and the rates > table contains: destination, prefix, rate (cost). > > The problem is that I can't just strip the destination number to > take the prefix from it because I have to deal with destination > numbers from different countries and they all have different prefix > lengths... so I need to find another way to take the prefix from the > destination number. > > Any ideas how to do this? > > Thanks, > > Diego > > _______________________________________________ > FreeSWITCH-users mailing list > FreeSWITCH-users@lists.freeswitch.org > http://lists.freeswitch.org/mailman/listinfo/freeswitch-users > UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch- > users > http://www.freeswitch.org _______________________________________________ FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org