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https://issues.apache.org/jira/browse/HIVE-1266?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12879141#action_12879141
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Namit Jain commented on HIVE-1266:
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The patch does not apply cleanly.
> partitioning pruing should be more intelligent
> ----------------------------------------------
>
> Key: HIVE-1266
> URL: https://issues.apache.org/jira/browse/HIVE-1266
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Reporter: Namit Jain
> Assignee: He Yongqiang
> Attachments: hive-1266.1.patch
>
>
> Copying the mail from Adam:
> A badly written query:
> select .. from T where partitioning_colmn = 'p1' AND c1 = 100 or c2 = 200
> ...is a command I just foolishly ran: I should have put the disjunction in
> parentheses.
> But the command actually touched every partition of T without a warning. Is
> that a bug? When we force people to state a partition predicate, it seems we
> are just looking for it to be referenced in the WHERE or ON clause, when
> maybe we should be looking at conjuncts?
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