RE: OPNQRYF - Zero records -- MIDRANGE-L

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I think the command is CPYFRMQRYF (not CPYFRMQF).

Then do the RTVMBRD    FILE(QTEMP/&TEMPFL) NBRCURRCD(&TEMPFLREC)

Better yet, to reduce the time if there are lots of records selected, do:

CPYFRMQRYF FROMOPNID(X) NBRRCDS(1)

which will only copy the first record.  That is all you need to see if there
are zero records!

be sure to run the command to reset the file pointer back to the start of
the file, or you would miss the first record in the next program downstream!

POSDBF POSITION(*START)

So, here are the commands:

OVRDBF ...
OPNQRYF &TEMPFL OPNID(X) ...
CPYFRMQRYF FROMOPNID(X) TOFILE(Y) NBRRCDS(1)
RTVMBRD    FILE(QTEMP/Y) NBRCURRCD(&TEMPFLREC)
POSDBF OPNID (X) POSITION(*START)



-----Original Message-----
From: alan shore [mailto:SHOREA@dime.com]
Sent: Tuesday, February 05, 2002 10:25 AM
To: midrange-l@midrange.com
Subject: Re: OPNQRYF - Zero records


My aplogies if someone has already answered this, but I was late in arriving
at work, and I am presently wading through ALL my e-mail, and I decided to
answer this as I go through the list.
Plus it makes me feel good when there is something I can answer .That
does'nt happen very often for me.

Anyway, in answer to your question,  another method is to use the following
command.
Use the CPYFRMQF to create another file from the OPNQRYF command (into QTEMP
is a suggestion) and then
RTVMBRD    FILE(QTEMP/&TEMPFL) NBRCURRCD(&TEMPFLREC)
The field   &TEMPFLREC will hold the number of records for that file.

>>> <Steven.Gray@arvalphh.co.uk> 02/05/02 07:00AM >>>
I am trying to test if the OPNQRYF file produced has no records from the
selection criteria.

I can do this by using the DSPFD to an OUTFILE and then using DCLF and RCVF
to read the 1st record which will contain the &field MBNRCD , to inform me
if there are indeed 0 records.

But,

is this the best way to go ,

as this will only allow 1 file comparison in the CL program.

If I want to test any more files for zero records , then they have to have
their own CL programs.Which is obviously not ideal.
Also the testing of this is messy , as another file has to be created which
holds the testing files data.

Regards

Steven Gray
Development/Support Analyst




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