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Posted to issues@spark.apache.org by "Takeshi Yamamuro (Jira)" <ji...@apache.org> on 2019/12/29 00:43:00 UTC
[jira] [Updated] (SPARK-27765) Type Casts: expression::type
[ 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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