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https://issues.apache.org/jira/browse/SPARK-28033?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16862844#comment-16862844
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Yuming Wang commented on SPARK-28033:
-------------------------------------
I'm working on.
> String concatenation low priority than other arithmeticBinary
> -------------------------------------------------------------
>
> Key: SPARK-28033
> URL: https://issues.apache.org/jira/browse/SPARK-28033
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Yuming Wang
> Priority: Major
>
> Spark SQL:
> {code:sql}
> spark-sql> explain select 'four: ' || 2 + 2;
> == Physical Plan ==
> *(1) Project [null AS (CAST(concat(four: , CAST(2 AS STRING)) AS DOUBLE) +
> CAST(2 AS DOUBLE))#2]
> +- Scan OneRowRelation[]
> spark-sql> select 'four: ' || 2 + 2;
> NULL
> {code}
> Hive:
> {code:sql}
> hive> select 'four: ' || 2 + 2;
> OK
> four: 4
> {code}
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