What you gave seems like it should work. But I'd try it as:
C = COGROUP A BY id, B BY id;
D = FILTER C BY COUNT(A) = 0;
E = FOREACH D GENERATE FLATTEN(B);
Alan.
On Mar 29, 2010, at 7:06 PM, Kent Shi wrote:
Hi,
I am trying to get the elements of B not in A. My code is like this
C = JOIN A
Just saw a response to this recently, the right way is to use co-group to
join A and B and then to check IsEmpty(A) instead of doing an outer join and
checking is null
On Mon, Mar 29, 2010 at 7:06 PM, Kent Shi k...@ning.com wrote:
Hi,
I am trying to get the elements of B not in A. My code
Thanks, that worked.
I also found out the reason why my code didn't work here
https://issues.apache.org/jira/browse/PIG-1289
On Mar 30, 2010, at 10:58 AM, Alan Gates wrote:
What you gave seems like it should work. But I'd try it as:
C = COGROUP A BY id, B BY id;
D = FILTER C BY
Hi,
I am trying to get the elements of B not in A. My code is like this
C = JOIN A BY id RIGHT OUTER, B BY id;
D = FILTER C BY A::id is null;
id is an INT, and this doesn't work. I also tried A::id != B::id,
(chararray)A::id == '', both also didn't work. Can someone tell me how I
should do
