Re: CHAIN versus SETLL

[John Carr <74711.77@xxxxxxxxxxxxxx>]

RE:     Re: CHAIN versus SETLL

>Don't you need to do a setll,
> then do a read,
> then do a compare to your key,
> to see if the record you seek is actually there?  

>Whereas, with a chain you need only hit the file's index to set on the
>no-hit indicator?
>-----------------------------------------------------------
>boothm@earth.goddard.edu
>----------------------------------------------------------

Booth;

In a word, No.  Thats the beauty of AS/400 Keylists.  You can use a partial
keylist and check the EQ (3rd) indicator on the SETLL.  If its *ON, 
Its there. If its *OFF, Its not.  

(You only time you would have to do the ordeal you stated is if you want
to check "A Part of one field". For instance if you setll with a 20 byte
character field and then want to see if the next record matchs Only the
first "X" positions of that 20 bytes.)

John P. Carr CDP
EdgeTech 


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