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  2. MIDRANGE-L
  3. November 2009

Re: Inner Join

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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