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https://issues.apache.org/jira/browse/PIG-1765?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12971363#action_12971363
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Daniel Dai commented on PIG-1765:
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If we are going to change, we also need to address the following situation as
well:
f = foreach l generate flatten(a) as (a0:int, a1:int); -- here user do not
mean to generate a tuple, but to name different component of flattened bag, we
need to way to express this
> as_clause in foreach statement should differentiate between simple type and
> type within tuple
> ---------------------------------------------------------------------------------------------
>
> Key: PIG-1765
> URL: https://issues.apache.org/jira/browse/PIG-1765
> Project: Pig
> Issue Type: Sub-task
> Reporter: Thejas M Nair
> Fix For: 0.9.0
>
>
> In new parser changes, the following statements are treated as same -
> f = foreach l generate a as aa :int; -- here the column is now called aa
> and has type int
> f = foreach l generate a as (aa :int); -- this should mean that the column
> has type "tuple with column aa of type int"
> With old parser the 2nd statement results in syntax error, which is fine,
> because it requires name part .
> The parenthesis represent tuple in pig. We should deprecate support for load
> statement that takes schema without the parenthesis part , such as following
> example -
> l = load 'x' as a:int -- It should be as (a :int) , it is treated as such but
> this is inconsistent syntax.
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