Re: Inner Join

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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