Mike,

You say there is no select list active - but you are performing a "LIST"
statement, isn't that an implied active select list.

You shouldn't do anything in an i-type that could affect selectlist 0
(or use it up), and shelling out to perform a select would be very
in-efficient (one perform/execute for every record in the file you're
listing).

Using the basic SELECT in the u-type is probably your best option - but
without knowing what you're trying to achieve it's difficult to suggest
a better alternative.

AdrianW 

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of HENDERSON MIKE,
MR
Sent: Thursday, 19 May 2005 11:10 AM
To: u2-users@listserver.u2ug.org
Subject: [U2] UV "PERFORM 'SELECT <filename> ...' " in I-Type
{Unclassified}

Folks,

We have had a puzzling situation where a particular subprogram works
differently when run from a test-harness from TCL, to when it is run as
an I-Type subroutine.

The sub-routine concerned is about three layers deep in the execution
sequence:-

Test-Harness does CALL A(<parameters>), A does CALL
PROBLEM(<parameters>)
I-Type says SUBR("X",<parameters>), and X does CALL A(<parameters>), A
does CALL PROBLEM(<parameters>)

When you LIST <file name> <I-Type name> the I-Type returns 'wrong'
answers


The programmer concerned eventually worked out that the problem was
that, from the I-Type, a "PERFORM 'SELECT <filename>  <with-condition>'
" ALWAYS returned no records, whereas the same select works correctly
from the test harness.  No, the were no select lists active at the time!

The solution was to change the "PERFORM 'SELECT <filename>
<with-condition>' " to a Basic "SELECT <filename>" and weed out the
unwanted records in an internal loop.


It may well be that it has always been this way, the I-Type is new.
UV 10.0, INformation flavour, Windows 2K3


Ideas, anyone?

Thanks

Mike




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