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https://issues.apache.org/jira/browse/SPARK-10865?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15001422#comment-15001422
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Cheng Hao commented on SPARK-10865:
-----------------------------------
We actually follow the criteria of Hive, and actually I tested it in MySQL, it
works in the same way.
> [Spark SQL] [UDF] the ceil/ceiling function got wrong return value type
> -----------------------------------------------------------------------
>
> Key: SPARK-10865
> URL: https://issues.apache.org/jira/browse/SPARK-10865
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 1.5.0
> Reporter: Yi Zhou
> Assignee: Cheng Hao
> Fix For: 1.6.0
>
>
> As per ceil/ceiling definition,it should get BIGINT return value
> -ceil(DOUBLE a), ceiling(DOUBLE a)
> -Returns the minimum BIGINT value that is equal to or greater than a.
> But in current Spark implementation, it got wrong value type.
> e.g.,
> select ceil(2642.12) from udf_test_web_sales limit 1;
> 2643.0
> In hive implementation, it got return value type like below:
> hive> select ceil(2642.12) from udf_test_web_sales limit 1;
> OK
> 2643
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