RE: Embedded SQL update a field based on difference of totals in 2 otherfiles

Without fully understanding the relationship between each files, my
guess is this:
ActSQL = 'Update DMVDRMST v +
                 Set v.AMDUE = +
                 Coalesce((Select +
                               Sum(i.INVAM) - Sum(p.PAYAM) +
                             From 
                               VAINVWK i left outer join VAPAYWK p On +
                                 i.VNDNR = p.VNDNR +
                             where +
                               v.VNDNR = i.VNDNR +
                          ), +
                          Cast(0.00 as Decimal(7,2)))'; 

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Jeff Crosby
Sent: Monday, September 11, 2006 1:59 PM
To: 'RPG programming on the AS400 / iSeries'
Subject: Embedded SQL update a field based on difference of totals in 2
otherfiles

All,

I hope I'm not overstaying my welcome with too many SQL questions, but
I'm really learning a lot from it, and I can't seem to find any examples
that fit this scenario.  Or else I'm just not hitting on the right
search terms.
Or else you'll tell me I'm making it much harder than it needs to be.

We want to print a trial balance report "as of" a date in time.  To do
this, I created QTEMP work files: the vendor master file and the 2
related transaction files (open invoices and unmatched payments).  Then
I programmatically determined, based on dates, which transactions were
"open"
at that time, and inserted them into the QTEMP transaction files.  Now I
want to set the QTEMP vendor master file field AMDUE (amount due) to be
the net of those transactions, by vendor.

Here's what I tried:

ActSQL = 'Update DMVDRMST v +
                 Set v.AMDUE = +
                 Coalesce((Select Sum(i.INVAM) - Sum(p.PAYAM) +
                           From DMVDRMST v +
                             Left Outer Join +
                           VAINVWK i On v.VNDNR = i.VNDNR +
                             Left Outer Join +
                           VAPAYWK p On v.VNDNR = p.VNDNR), +
                           Cast(0.00 as Decimal(7,2)))';

Exec SQL Execute Immediate :ActSQL;

Don't laugh if this is really bad SQL <g>.  I dumped the program
afterward.
Variable ActSQL has what I expect in it, and SQLSTT is 01504 (UPDATE or
DELETE does not contain a WHERE clause).  But AMDUE in the master has
70,662.30 dollars in _every_ record of the master.  This 70,662.30
figure is the net of _all_ transactions for _all_ vendors.

Am I heading the right direction?

Thanks.

--
Jeff Crosby
Dilgard Frozen Foods, Inc.
P.O. Box 13369
Ft. Wayne, IN 46868-3369
260-422-7531

The opinions expressed are my own and not necessarily the opinion of my
company.  Unless I say so.


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