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https://issues.apache.org/jira/browse/HIVE-753?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12742938#action_12742938
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Raghotham Murthy commented on HIVE-753:
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I spoke to Eric about this. His changes dont handle SET statements. So, if
there are SET statements between two queries, the parser will error out. Also,
it is not clear what the behavior should be if there are multiple SELECT
statements (no INSERT). The patch currently silently just picks up the schema
of the last query. If that is the case, should we even run the intermediate
SELECT queries? (answer: potentially, that they may have side effects). Maybe
we should return a list of ResultSets, one per statement. Or, error out if
there are multiple SELECT statements submitted at once.
> Move parsing of multiple queries from CLI into Hive parser
> ----------------------------------------------------------
>
> Key: HIVE-753
> URL: https://issues.apache.org/jira/browse/HIVE-753
> Project: Hadoop Hive
> Issue Type: Sub-task
> Reporter: Eric Hwang
> Assignee: Eric Hwang
> Priority: Minor
> Attachments: HIVE-753.1.patch
>
>
> CLI breaks down queries containing multiple statements and submits them to
> the Hive query parser one by one. This functionality should be added to the
> Hive language grammar so that other clients may also submit multiple queries.
> It will also make it easier to handle comments in Hive queries.
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