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https://issues.apache.org/jira/browse/SPARK-15229?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15276815#comment-15276815
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Apache Spark commented on SPARK-15229:
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User 'rxin' has created a pull request for this issue:
https://github.com/apache/spark/pull/13011

> Make case sensitivity setting internal
> --------------------------------------
>
>                 Key: SPARK-15229
>                 URL: https://issues.apache.org/jira/browse/SPARK-15229
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>            Reporter: Reynold Xin
>            Assignee: Reynold Xin
>
> Our case sensitivity support is different from what ANSI SQL standards 
> support. Postgres' behavior is that if an identifier is quoted, then it is 
> treated as case sensitive, otherwise it is folded to lower case. We will 
> likely need to revisit this in the future and change our behavior. For now, 
> the safest change to do for Spark 2.0 is to make the case sensitive option 
> internal and recommend users from not turning it on, effectively making Spark 
> always case insensitive.



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