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https://issues.apache.org/jira/browse/SPARK-10724?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14905658#comment-14905658
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Apache Spark commented on SPARK-10724:
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User 'navis' has created a pull request for this issue:
https://github.com/apache/spark/pull/8893
> SQL's floor() returns DOUBLE
> ----------------------------
>
> Key: SPARK-10724
> URL: https://issues.apache.org/jira/browse/SPARK-10724
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 1.5.0
> Reporter: Simeon Simeonov
> Priority: Critical
> Labels: sql
>
> This is a change in behavior from 1.4.1 where {{floor}} returns a BIGINT.
> {code}
> scala> sql("select floor(1)").printSchema
> root
> |-- _c0: double (nullable = true)
> {code}
> In the [Hive Language
> Manual|https://cwiki.apache.org/confluence/display/Hive/LanguageManual+UDF]
> {{floor}} is defined to return BIGINT.
> This is a significant issue because it changes the DataFrame schema.
> I wonder what caused this and whether other SQL functions are affected.
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