You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@spark.apache.org by "Dongjoon Hyun (Jira)" <ji...@apache.org> on 2020/09/13 04:37:00 UTC
[jira] [Updated] (SPARK-24994) Add UnwrapCastInBinaryComparison
optimizer to simplify literal types
[ https://issues.apache.org/jira/browse/SPARK-24994?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Dongjoon Hyun updated SPARK-24994:
----------------------------------
Summary: Add UnwrapCastInBinaryComparison optimizer to simplify literal types (was: Support cast pushdown for integral types)
> Add UnwrapCastInBinaryComparison optimizer to simplify literal 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
> Assignee: Chao Sun
> Priority: Major
> Fix For: 3.1.0
>
>
> 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.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org