You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@flink.apache.org by "Marios Trivyzas (Jira)" <ji...@apache.org> on 2021/10/19 08:17:00 UTC
[jira] [Updated] (FLINK-24588) Optimisation of chained cast calls
can lead to unexpected behaviour
[ https://issues.apache.org/jira/browse/FLINK-24588?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Marios Trivyzas updated FLINK-24588:
------------------------------------
Priority: Minor (was: Major)
> Optimisation of chained cast calls can lead to unexpected behaviour
> -------------------------------------------------------------------
>
> Key: FLINK-24588
> URL: https://issues.apache.org/jira/browse/FLINK-24588
> Project: Flink
> Issue Type: Sub-task
> Components: Table SQL / Planner
> Affects Versions: 1.15.0
> Reporter: Marios Trivyzas
> Priority: Minor
>
> Simplification of Cast chained calls can lead to unexpected behaviour:
> CAST(CAST(CAST(123456 AS TINYINT) AS INT) AS BIGINT)
> is simplified to
> {noformat}
> CAST(123456 AS BIGINT){noformat}
> and returns *123456* with *BIGINT* data type, where the first inner cast as TINYINT should already fail because the value is out of range.
> For example, for PostgreSQL:
> {noformat}
> postgres=# select 123456::smallint::int::bigint;
> ERROR: smallint out of range
> {noformat}
> Corresponding issue has been create at calcite: https://issues.apache.org/jira/browse/CALCITE-4861
--
This message was sent by Atlassian Jira
(v8.3.4#803005)