On Nov 8, 2013, at 8:23 AM, Paul McNett <[email protected]> wrote: >> I don't use filters very often. So I can't really comment. > > There are some corner-cases that aren't covered and that I don't fully > understand. > Use filter() with caution.
FIlters are a way to create a sub-set of the data in a DataSet without having to hit the database again. E.g.: you run a query that returns 100 records. Your user now selects an option to only show those with records whose last_name column starts with 'S'. You apply that filter, and now the DataSet only has those records. But when you remove the filter, the original data has been retained, so no round trip to the database is needed. Filters are great for local manipulation of a DataSet. -- Ed Leafe _______________________________________________ Post Messages to: [email protected] Subscription Maintenance: http://mail.leafe.com/mailman/listinfo/dabo-users Searchable Archives: http://leafe.com/archives/search/dabo-users This message: http://leafe.com/archives/byMID/[email protected]
