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https://issues.apache.org/jira/browse/SPARK-20403?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-20403:
------------------------------------

    Assignee:     (was: Apache Spark)

> It is wrong to the instructions of some functions,such as  
> boolean,tinyint,smallint,int,bigint,float,double,decimal,date,timestamp,binary,string
> ------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: SPARK-20403
>                 URL: https://issues.apache.org/jira/browse/SPARK-20403
>             Project: Spark
>          Issue Type: Bug
>          Components: Documentation, SQL
>    Affects Versions: 2.1.0
>            Reporter: liuxian
>            Priority: Trivial
>
> spark-sql>desc function boolean;
> Function: boolean
> Class: org.apache.spark.sql.catalyst.expressions.Cast
> Usage: boolean(expr AS type) - Casts the value `expr` to the target data type 
> `type`.
> spark-sql>desc function int;
> Function: int
> Class: org.apache.spark.sql.catalyst.expressions.Cast
> Usage: int(expr AS type) - Casts the value `expr` to the target data type 
> `type`.



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