I generally don't think of using the key, is it worth setting temporary keys for stuff like that?
I would have thought that if you are doing a select on different columns (thus meaning the keys would need to be recreated) that the speed up from the key-based select would be negated by the cost of resetting keys? It's definitely something I should probably consider doing more. -- Mick Cooney [email protected] _______________________________________________ datatable-help mailing list [email protected] https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/datatable-help
