I've never used *START.
But it seems to me the %EQUAL has no meaning when you are not providing key values to the SETLL op code.
-----Original Message-----
From: RPG400-L <rpg400-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Peter Dow
Sent: Thursday, March 16, 2023 5:20 PM
To: rpg400-l <rpg400-l@xxxxxxxxxxxxxxxxxx>
Subject: SETLL *START and %EQUAL
I have a program that has
SETLL *START MyFile;
IF %EQUAL();
READ MyFile;
ELSE;
do something different;
ENDIF;
In debug, I discovered that it does something different. My first thought was that maybe it's because the file is empty, but it wasn't.
After reading the manual, the closest thing I can see to saying why %EQUAL was *OFF was this:
"You can specify an indicator in positions 75-76 that is set on when a record is present whose key or relative record number is equal to the search argument. This information can also be obtained from the %EQUAL built-in function, which returns '1' if an exact match is found."
I guess there's an argument to be made that *START is not an exact match with whatever is in the first record, but one could also say that the first record is always a match for the first record.
I also noticed that the manual does not say what the effect of () around the search argument is. My assumption there is that the () define a list of values that are converted to match the related key fields, but the manual does not say that.
Where is this stuff actually stated?
--
*Peter Dow* /
Dow Software Services, Inc.
909 793-9050
petercdow@xxxxxxxxx
pdow@xxxxxxxxxxxxxx
/
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