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https://issues.apache.org/jira/browse/HIVE-1082?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12875608#action_12875608
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Ning Zhang commented on HIVE-1082:
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this has not been done AFAIK. I had an offline discussion with Venky before and
what he want should be implemented using a new synax such as CREATE OR REPLACE
TABLE. We should keep the semantics of CREATE TABLE IF NOT EXISTS unchanged
since other other users are already using it. Changing the semantics may break
their use cases.
> "create table if not exists " should check if the specified schema matches
> the existing schema, and throw an error if it doesnt.
> -----------------------------------------------------------------------------------------------------------------------------------
>
> Key: HIVE-1082
> URL: https://issues.apache.org/jira/browse/HIVE-1082
> Project: Hadoop Hive
> Issue Type: Bug
> Reporter: Venky Iyer
>
> I think we should make sure that the table can either be created anew with
> the specified properties, or it already exists with those properties, where
> 'properties' includes all metadata except timestamps. Anything else is an
> error. This makes sense if you think of a table as the name + its schema,
> instead of the name alone.
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