[jira] [Updated] (SPARK-20964) Make some keywords reserved along with the ANSI/SQL standard

["Dongjoon Hyun (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-20964?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dongjoon Hyun updated SPARK-20964:
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    Target Version/s: 3.1.0

> Make some keywords reserved along with the ANSI/SQL standard
> ------------------------------------------------------------
>
>                 Key: SPARK-20964
>                 URL: https://issues.apache.org/jira/browse/SPARK-20964
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 2.1.1
>            Reporter: Takeshi Yamamuro
>            Priority: Minor
>
> The current Spark has many non-reserved words that are essentially reserved in the ANSI/SQL standard (http://developer.mimer.se/validator/sql-reserved-words.tml). 
> https://github.com/apache/spark/blob/master/sql/catalyst/src/main/antlr4/org/apache/spark/sql/catalyst/parser/SqlBase.g4#L709
> This is because there are many datasources (for instance twitter4j) that unfortunately use reserved keywords for column names (See [~hvanhovell]'s comments: https://github.com/apache/spark/pull/18079#discussion_r118842186). We might fix this issue in future major releases.



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