Re: Inner Join

[Michael Ryan <michaelrtr@xxxxxxxxx>]

Problem solved...programmer error. Sigh...

Anyway, an inner join is the default anyway, right?

On Mon, Nov 23, 2009 at 11:21 AM, Michael Ryan <michaelrtr@xxxxxxxxx> wrote:

> 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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