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Posted to issues@spark.apache.org by "Apache Spark (Jira)" <ji...@apache.org> on 2021/02/05 18:33:00 UTC

[jira] [Commented] (SPARK-34379) Map JDBC RowID to StringType rather than LongType

    [ https://issues.apache.org/jira/browse/SPARK-34379?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17279891#comment-17279891 ] 

Apache Spark commented on SPARK-34379:
--------------------------------------

User 'sarutak' has created a pull request for this issue:
https://github.com/apache/spark/pull/31491

> Map JDBC RowID to StringType rather than LongType
> -------------------------------------------------
>
>                 Key: SPARK-34379
>                 URL: https://issues.apache.org/jira/browse/SPARK-34379
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 3.2.0
>            Reporter: Kousuke Saruta
>            Assignee: Kousuke Saruta
>            Priority: Minor
>
> In the current implementation, JDBC RowID type is mapped to LongType except for OracleDialect, but there is no guarantee to be able to convert RowID to long.
> java.sql.RowId declares toString and the specification of java.sql.RowId says
> _all methods on the RowId interface must be fully implemented if the JDBC driver supports the data type_
> (https://docs.oracle.com/javase/8/docs/api/java/sql/RowId.html)
> So, we should prefer StringType to LongType.



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