Re: Inner Join

[Terrence Enger <tenger@xxxxxxxxxxxxxxxx>]

On Mon, 2009-11-23 at 13:51 -0500, Michael Ryan wrote:
> Problem solved...programmer error. Sigh...

I did not respond to your second message at 11:21 because I could not
think of any explanation.  Maybe it would have been helpful for me to
say "I have nothing to say" <grin />.

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

Yup.

> 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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