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https://issues.apache.org/jira/browse/HIVE-4067?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Samuel Yuan updated HIVE-4067:
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Affects Version/s: 0.11.0
Status: Patch Available (was: Open)
> Followup to HIVE-701: reduce ambiguity in grammar
> -------------------------------------------------
>
> Key: HIVE-4067
> URL: https://issues.apache.org/jira/browse/HIVE-4067
> Project: Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.11.0
> Reporter: Samuel Yuan
> Assignee: Samuel Yuan
> Priority: Minor
>
> After HIVE-701 the grammar has become much more ambiguous, and the
> compilation generates a large number of warnings. Making FROM, DISTINCT,
> PRESERVE, COLUMN, ALL, AND, OR, and NOT reserved keywords again reduces the
> number of warnings to 134, up from the original 81 warnings but down from the
> 565 after HIVE-701. Most of the remaining ambiguity is trivial, an example
> being "KW_ELEM_TYPE | KW_KEY_TYPE | KW_VALUE_TYPE | identifier", and they are
> all correctly handled by ANTLR.
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