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Posted to issues@spark.apache.org by "Apache Spark (Jira)" <ji...@apache.org> on 2020/08/27 23:54:00 UTC
[jira] [Commented] (SPARK-24994) When the data type of the field is
converted to other types, it can also support pushdown to parquet
[ https://issues.apache.org/jira/browse/SPARK-24994?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17186173#comment-17186173 ]
Apache Spark commented on SPARK-24994:
--------------------------------------
User 'sunchao' has created a pull request for this issue:
https://github.com/apache/spark/pull/29565
> When the data type of the field is converted to other types, it can also support pushdown to parquet
> ----------------------------------------------------------------------------------------------------
>
> Key: SPARK-24994
> URL: https://issues.apache.org/jira/browse/SPARK-24994
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.1.0
> Reporter: liuxian
> Priority: Major
>
> For this statement: select * from table1 where a = 100;
> the data type of `a` is `smallint` , because the defaut data type of 100 is `int` ,so the data type of 'a' is converted to `int`.
> In this case, it does not support push down to parquet.
> In our business, for our SQL statements, and we generally do not convert 100 to `smallint`, We hope that it can support push down to parquet for this situation.
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