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Posted to issues@spark.apache.org by "Hyukjin Kwon (Jira)" <ji...@apache.org> on 2021/01/15 04:13:00 UTC

[jira] [Commented] (SPARK-12890) Spark SQL query related to only partition fields should not scan the whole data.

    [ https://issues.apache.org/jira/browse/SPARK-12890?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17265674#comment-17265674 ] 

Hyukjin Kwon commented on SPARK-12890:
--------------------------------------

[~nchammas], shall we file a new JIRA? your description looks much better than the current one, and easier to follow.

> Spark SQL query related to only partition fields should not scan the whole data.
> --------------------------------------------------------------------------------
>
>                 Key: SPARK-12890
>                 URL: https://issues.apache.org/jira/browse/SPARK-12890
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>            Reporter: Prakash Chockalingam
>            Priority: Minor
>
> I have a SQL query which has only partition fields. The query ends up scanning all the data which is unnecessary.
> Example: select max(date) from table, where the table is partitioned by date.



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