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I've always been told a chain is like a combo setll and read in one
shot. By only doing the setll for all the records you don't need, I
would imagine you would process much more quickly than doing the chain
for each record.
-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Mike Cunningham
Sent: Wednesday, August 08, 2007 8:00 AM
To: RPG programming on the AS400 / iSeries
Subject: Is a SETLL faster than a CHAIN
I need to get data from a file but I know that for every 100 records I
process only 1 will have a record in the file I am going to CHAIN to. Is
it faster to first to a SETLL to see if the key exists and if it does do
a CHAIN or is just doing the CHAIN just as fast? Many years ago in the
S/38 days I know the recommendation was to the SETLL then the CHAIN.
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