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https://issues.apache.org/jira/browse/PIG-1624?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12910705#action_12910705
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Alan Gates commented on PIG-1624:
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I should note as well that when a flatten is involved, the proper syntax is:
{code}
A = load '/Users/gates/test/data/studenttab10' as (name:chararray, b{},
gpa:double);
B = foreach A generate name, flatten(b) as (fred, bob, joe), gpa;
dump B;
{code}
Note the use of parenthesis to enclose the list of fields coming from the
flattened bag.
> FOREACH AS documentation is incorrect
> -------------------------------------
>
> Key: PIG-1624
> URL: https://issues.apache.org/jira/browse/PIG-1624
> Project: Pig
> Issue Type: Bug
> Components: documentation
> Affects Versions: 0.7.0
> Reporter: Alan Gates
> Assignee: Corinne Chandel
> Fix For: 0.9.0
>
>
> According to the Pig Latin manual
> (http://hadoop.apache.org/pig/docs/r0.7.0/piglatin_ref2.html#FOREACH) the
> correct usage of AS in a FOREACH clause is:
> {code}
> B = foreach A generate $0, $1, $2 as (user, age, gpa);
> {code}
> However, this is incorrect, and produce a syntax error. The correct syntax
> for AS for FOREACH is:
> {code}
> B = foreach A generate $0 as user, $1 as age, $2 as gpa;
> {code}
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