The documentation page called "Pig Latin Basics" at
http://pig.apache.org/docs/r0.9.2/basic.html
has three occurrences of "INNER" in upper case.
From these three occurrences it seems that INNER is a keyword and it can be
used in COGROUP.  However the syntax does not mention INNER and the example
of its use does not clarify what the semantics of this keyword are. 
Can anyone explain it or point to a place in the documentation that I missed?
Thanks.

Fred Zemke
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Oracle
Fred Zemke | SQL standards representative
Phone: +1 6505062051

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