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Posted to issues@spark.apache.org by "Apache Spark (Jira)" <ji...@apache.org> on 2022/03/11 13:54:00 UTC
[jira] [Commented] (SPARK-38196) Reactor framework so as JDBC dialect could compile expression by self way
[ https://issues.apache.org/jira/browse/SPARK-38196?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17504927#comment-17504927 ]
Apache Spark commented on SPARK-38196:
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User 'cloud-fan' has created a pull request for this issue:
https://github.com/apache/spark/pull/35818
> Reactor framework so as JDBC dialect could compile expression by self way
> -------------------------------------------------------------------------
>
> Key: SPARK-38196
> URL: https://issues.apache.org/jira/browse/SPARK-38196
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.3.0
> Reporter: jiaan.geng
> Assignee: jiaan.geng
> Priority: Major
> Fix For: 3.3.0
>
>
> https://issues.apache.org/jira/browse/SPARK-37960 provides a new framework to represent catalyst expressions in DS V2 APIs.
> Because the framework translate all catalyst expressions to a unified SQL string and cannot keep compatibility between different JDBC database, the framework works not good.
> This PR reactor the framework so as JDBC dialect could compile expression by self way.
> First, The framework translate catalyst expressions to DS V2 expression.
> Second, The JDBC dialect could compile DS V2 expression to different SQL syntax.
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