in GROUP/COGROUP the INNER keyword is used to ensure that only bags with at least one tuple are returned.
older doc has 2 examples:
would have been helpful if Pig team retained above details into 0.9.x (& onwards) docs! :)
a;
From: fred zemke <[email protected]>
To: [email protected]
Sent: Thursday, 26 April 2012 12:55 AM
Subject: keyword INNER
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
--
Fred Zemke | SQL standards representative
Phone: +1 6505062051
Oracle is committed to developing practices and products that help protect the environment
