Re: Search for a record in a file

John Hall wrote:

> I need to search about 10 different files to see if any of them contain
> a field with a specific value.  Each file has around 200K records.  This
> is an occasional search 1 or 2 times a week.  Most of the files are
> history files and will not be added to.
>
> I only need to know if the file contains any records with this value.
>
> Question : what is the most efficient way to search these files ?
>
> I think is is probably either with an SQL statement
>

I can't speak to the SQL side of it, but if you are going to use RPG to search
all records be sure there is no K on the file spec line.  If you write your
program with an Input Primary file and the rest as Input Secondary files. Then 
an
I line, with a record type for each file, with a record indicator, and then the 
C
lines for each record type.  This method  isn't very glamorous but I have found
that it is fast.  Whether it is one program with ten files or ten programs with
one file is another issue entirely.


> John L. Hall
> Home Sales Co.



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