differnce between read work file 1 and read work file once?
why we are using work file once?
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Answer Posted / kevin
As NIKI stated the read work file 1 is identifying the work
file in JLC
As for the work read work file once it is used to get the
next record. The record pointer doesn't get reset allow
you to process records from 2 files one at at time.
For example if you are comparing record from 2 work files
and processing the records in order
read work a once /* reads the first a record
read work b once /* reads the second b record
REPEAT
IF rec-a > rec-b
process b ...
read work b once
escape top
End-if
IF rec-a < rec-b
process a ...
read work a once
ecape top
End-if
If rec-a = rec-b
process a and b ...
read work a once
read work b once
end-if
end-repeat
(of course you would need escape logic in the loop such as
end of file logic...)
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