Re: Inner Join

[Michael Ryan <michaelrtr@xxxxxxxxx>]

Hmmm...when I copy the statement (filling in the variables with values) from
my RPG program to interactive SQL, it works in interactive SQL. I *do* have
multiple records in FILEA with the same key value, and only one record with
that key value in FILEB.

On Mon, Nov 23, 2009 at 11:04 AM, Terrence Enger <tenger@xxxxxxxxxxxxxxxx>wrote:

> On Mon, 2009-11-23 at 10:34 -0500, Michael Ryan wrote:
> > If I have FILEA and FILEB with a matching key of FILEA.KEY and FILEB.KEY,
> > wouldn't this:
> >
> > Select * from FILEA Inner Join FILEB on FILEA.KEY = FILEB.KEY
> >
> > Give me all the records where there is a match in FILEA and FILEB, and no
> > other records?
>
> That sounds right.  If you are seeing more records than you were
> expecting, it may be the result of a repeated value in the KEYs.
> Remember that join means (some subset of) the cross product of the
> tables.
>
> Cheers,
> Terry.
>
>
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