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https://issues.apache.org/jira/browse/SPARK-30431?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan reassigned SPARK-30431:
-----------------------------------
Assignee: Kent Yao
> Update SqlBase.g4 to create commentSpec pattern as same as locationSpec
> -----------------------------------------------------------------------
>
> Key: SPARK-30431
> URL: https://issues.apache.org/jira/browse/SPARK-30431
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Kent Yao
> Assignee: Kent Yao
> Priority: Minor
>
> In `SqlBase.g4`, the comment clause is used as `COMMENT comment=STRING` and
> `COMMENT STRING` in many places.
> While the location clause often appears along with the comment clause with a
> pattern defined as
> {code:sql}
> locationSpec
> : LOCATION STRING
> ;
> {code}
> Then, we have to visit locationSpec as a List but comment as a single token
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