Re: Embedded SQL update a field based on difference of totals in 2 other files

you need to have a where clause after your Coalesce.

The select statement in the Coalesce is not linking at all to the update clause.

so, it's updating all the records in DMVDRMST to the single value it
derived from the select statement.   in other words, the select inside
the Coalesce is returning a single value, which is being assigned to
all the records in DMVDRMST.

try something like this:

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



On 9/11/06, Jeff Crosby <jlcrosby@xxxxxxxxxxxxxxxx> wrote:

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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