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RPG SETLL Print E-mail
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Written by Chamara Withanachchi   

The normal use of SETLL is with a full or partial key, or a relative record number. SETLL can also be used with the figurative constants, *LOVAL and *HIVAL.


SETLL *LOVAL {file}
Using SETLL with *LOVAL positions the file so that the first read retrieves the record with the lowest key.


SETLL *HIVAL {file}
*HIVAL positions the file so that a READP retrieves the last record in the file, or a READ receives an end-of-file indication.


*LOVAL is most commonly used to reset reading at the beginning of a keyed file.


*HIVAL is really most useful when the desire is to use the last record in a file.


The most important thing to keep in mind about SETLL, even with using *LOVAL and *HIVAL is that no data read is done from the file.


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