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From "Takeshi Yamamuro (Jira)" <j...@apache.org>
Subject [jira] [Updated] (SPARK-27765) Type Casts: expression::type
Date Sun, 29 Dec 2019 00:43:00 GMT

     [ https://issues.apache.org/jira/browse/SPARK-27765?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Takeshi Yamamuro updated SPARK-27765:
-------------------------------------
    Parent Issue: SPARK-30375  (was: SPARK-27764)

> Type Casts: expression::type 
> -----------------------------
>
>                 Key: SPARK-27765
>                 URL: https://issues.apache.org/jira/browse/SPARK-27765
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>    Affects Versions: 3.0.0
>            Reporter: Xiao Li
>            Priority: Major
>
> [https://www.postgresql.org/docs/9.0/sql-expressions.html#SQL-SYNTAX-TYPE-CASTS]
>  * A type cast specifies a conversion from one data type to another. PostgreSQL accepts
two equivalent syntaxes for type casts:
>  ** CAST ( expression AS type )
>  ** expression::type
>  * The {{CAST}} syntax conforms to SQL; the syntax with {{::}} is historical PostgreSQL usage.
>  



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