Re: SQL solution for copying subset of one file to another, based on a third's contents?

["Martin Rowe" <dbg400.net@xxxxxxxxx>]

On 18/01/07, Dan <dan27649@xxxxxxxxx> wrote:
> I need to copy a subset of a huge customer file into a test version of the
> file.  The customer file is uniquely keyed by company number (CONUM) and
> customer number (CUNUM).  The subset is to be derived from a transaction
> file, which has the CONUM & CUNUM keys.  Problem is that the transaction
> file will have multiple records for any customer record.  Can SQL's INSERT
> somehow be used for this, or is this more easily solved by an RPG
> application?

Hi Dan

Have a look at 
http://www.dbg400.net/cgi-bin/twiki/view/DBG400/DataBaseGeneration
- DBG/400 - which is designed to do just what (I think) you're after.
It can do subsets using links that define one file's relation to
another, with scripts that string the links together. If you don't
want to build from source you can download a save file of the source &
compiled objects - see the Downloads link.

Regards, Martin