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Posted to commits@pig.apache.org by Apache Wiki <wi...@apache.org> on 2011/08/03 10:56:23 UTC

[Pig Wiki] Update of "NestedForeach" by Aniket Mokashi

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The "NestedForeach" page has been changed by Aniket Mokashi:
http://wiki.apache.org/pig/NestedForeach

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This document captures the specification for nested foreach support in pig and proposal for extending this support over multiple levels. This is tracked at [[#ref1|PIG-1631]].

== Introduction ==
Pig currently supports DISTINCT, FILTER, LIMIT, CROSS and ORDER BY inside nested foreach statement and it is highly desired to have support for FOREACH nested inside a foreach.

{{{
C = foreach B {
     C1 = foreach A generate ..;
     ...
     generate group, ..;
}
}}}