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https://issues.apache.org/jira/browse/SPARK-14857?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15254575#comment-15254575
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Apache Spark commented on SPARK-14857:
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User 'gatorsmile' has created a pull request for this issue:
https://github.com/apache/spark/pull/12618
> Table/Database Name Validation in SessionCatalog
> ------------------------------------------------
>
> Key: SPARK-14857
> URL: https://issues.apache.org/jira/browse/SPARK-14857
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.0.0
> Reporter: Xiao Li
>
> We need validate the database/table names before storing these information in
> `ExternalCatalog`.
> For example, if users use `backstick` to quote the table/database names
> containing illegal characters, these names are allowed by Spark Parser, but
> Hive metastore does not allow them. We need to catch them in SessionCatalog
> and issue an appropriate error message.
> ```
> CREATE TABLE `tab:1` ...
> ```
> This PR enforces the name rules of Spark SQL for `table`/`database`/`view`:
> `only can contain alphanumeric and underscore characters.` Different from
> Hive, we allow the names with starting underscore characters.
> The validation of function/column names will be done in a separate JIRA.
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