[jira] [Commented] (SPARK-28146) Support IS OF () predicate

["Takeshi Yamamuro (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-28146?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17004650#comment-17004650 ] 

Takeshi Yamamuro commented on SPARK-28146:
------------------------------------------

I'll close for now because I think this is useless for Spark. Feel free to reopen if you're interested in this.

> Support IS OF (<type>) predicate
> --------------------------------
>
>                 Key: SPARK-28146
>                 URL: https://issues.apache.org/jira/browse/SPARK-28146
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>    Affects Versions: 3.0.0
>            Reporter: Peter Toth
>            Priority: Minor
>
> PostgreSQL supports IS OF (<type>) predicate, for example the following query is valid:
> {noformat}
> select 1 is of (int), true is of (bool)
> true true
> {noformat}
> I can't find PostgreSQL documentation about it, but here is how it works in Oracle:
>  [https://docs.oracle.com/cd/B28359_01/server.111/b28286/conditions014.htm#SQLRF52157]



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