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Posted to issues@spark.apache.org by "Chao Sun (Jira)" <ji...@apache.org> on 2020/09/11 15:51:00 UTC

[jira] [Updated] (SPARK-24994) Support cast pushdown for integral types

     [ https://issues.apache.org/jira/browse/SPARK-24994?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chao Sun updated SPARK-24994:
-----------------------------
    Summary: Support cast pushdown for integral types  (was: Support pushdown casts for )

> Support cast pushdown for integral types
> ----------------------------------------
>
>                 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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