To get what you want, you need to do an (inner) join on C and D, using
the lhs and rhs of the equality as join keys.
-Thejas
On 3/19/12 12:52 PM, Michael Moore wrote:
Apologies for the formatting of the previous email. Here's the question
properly formatted:
Hi All,
I have a statement like this:
-- A is omitted, loads dataB = FOREACH A GENERATE FLATTEN(data1.b.v) as
dataPoint1, FLATTEN(data2.b.v) as dataPoint2;C = FILTER B BY dataPoint1 ==
'sampleDataPoint';
I'd like to generate a new filter based on the results of C. For instance, I'd
like to do something like this:D = FILTER B BY datapoint1 == C.dataPoint2;
(This would look for all rows in B where dataPoint1 is the same as the matching
dataPoint2 to 'sampleDataPoint'.)
For example: (format: dataPoint1,datapoint2)
B would return:1,21,42,82,13,78,7
If sampleDataPoint =2, C would return2,82,1
I'd like D to return:1,21,48,7
Is there a clever way to do this that I'm missing? Thanks!-Mike
From: [email protected]
To: [email protected]
Subject: Filter based on results of previous filter
Date: Mon, 19 Mar 2012 15:49:10 -0400
Hi All,
I have a statement like this:
-- A is omitted, loads dataB = FOREACH A GENERATE FLATTEN(data1.b.v) as
dataPoint1, FLATTEN(data2.b.v) as dataPoint2;C = FILTER B BY dataPoint1 ==
'sampleDataPoint';
I'd like to generate a new filter based on the results of C. For instance, I'd
like to do something like this:D = FILTER B BY datapoint1 == C.dataPoint2;
(This would look for all rows in B where dataPoint1 is the same as the matching
dataPoint2 to 'sampleDataPoint'.)
For example: (format: dataPoint1,datapoint2)
B would return:1,21,42,82,13,78,7
If sampleDataPoint =2, C would return2,82,1
I'd like D to return:1,21,48,7
Is there a clever way to do this that I'm missing? Thanks!-Mike
