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https://issues.apache.org/jira/browse/SPARK-13713?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15182803#comment-15182803
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Apache Spark commented on SPARK-13713:
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User 'hvanhovell' has created a pull request for this issue:
https://github.com/apache/spark/pull/11557
> Replace ANTLR3 SQL parser by a ANTLR4 SQL parser
> ------------------------------------------------
>
> Key: SPARK-13713
> URL: https://issues.apache.org/jira/browse/SPARK-13713
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Reporter: Herman van Hovell
> Fix For: 2.0.0
>
>
> Replace the current SQL Parser by a version written in ANTLR4. This has
> various advantages:
> * Much simpler structure
> * No code blowup
> * Reduction in lines of code
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