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

I like Steve's answers better than mine.

Why do I always forget about EXISTS?

Charles Wilt
--
iSeries Systems Administrator / Developer
Mitsubishi Electric Automotive America
ph: 513-573-4343
fax: 513-398-1121
  

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx 
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Steve Landess
Sent: Thursday, January 18, 2007 3:51 PM
To: Midrange Systems Technical Discussion
Subject: Re: SQL solution for copying subset of one file to 
another,based on a third's contents?

Insert into <TESTFILE>
(select *from customer xx
where exists
(select *From transaction yy
 where xx.conum=yy.conum
     and xx.cunum=yy.cunum)
)

- sjl

----- Original Message ----- 
From: "Dan" <dan27649@xxxxxxxxx>
To: "Midrange Systems Technical Discussion" <midrange-l@xxxxxxxxxxxx>
Sent: Thursday, January 18, 2007 2:25 PM
Subject: SQL solution for copying subset of one file to 
another,based on a 
third's contents?

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?

TIA,
Dan
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