[jira] [Updated] (SPARK-28028) Cast numeric to integral type need round

["Yuming Wang (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-28028?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yuming Wang updated SPARK-28028:
--------------------------------
    Description: 
For example
 Case 1:
{code:sql}
select cast(-1.5 as smallint);
{code}
Spark SQL returns {{-1}}, but PostgreSQL returns {{-2}}.

 

Case 2:
{code:sql}
SELECT smallint(float('32767.6'))
{code}
Spark SQL returns {{32767}}, but PostgreSQL throws {{ERROR: smallint out of range}}.

  was:
For example:
{code:sql}
select cast(-1.5 as smallint);
{code}
Spark SQL returns {{-1}}, but PostgreSQL returns {{-2}}.


> Cast numeric to integral type need round
> ----------------------------------------
>
>                 Key: SPARK-28028
>                 URL: https://issues.apache.org/jira/browse/SPARK-28028
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>    Affects Versions: 3.0.0
>            Reporter: Yuming Wang
>            Priority: Major
>
> For example
>  Case 1:
> {code:sql}
> select cast(-1.5 as smallint);
> {code}
> Spark SQL returns {{-1}}, but PostgreSQL returns {{-2}}.
>  
> Case 2:
> {code:sql}
> SELECT smallint(float('32767.6'))
> {code}
> Spark SQL returns {{32767}}, but PostgreSQL throws {{ERROR: smallint out of range}}.



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