[jira] [Updated] (CALCITE-4861) Optimization of chained CAST calls can lead to unexpected behavior

["Julian Hyde (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CALCITE-4861?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Julian Hyde updated CALCITE-4861:
---------------------------------
    Summary: Optimization of chained CAST calls can lead to unexpected behavior  (was: Optimisation of chained cast calls can lead to unexpected behaviour)

> Optimization of chained CAST calls can lead to unexpected behavior
> ------------------------------------------------------------------
>
>                 Key: CALCITE-4861
>                 URL: https://issues.apache.org/jira/browse/CALCITE-4861
>             Project: Calcite
>          Issue Type: Bug
>          Components: core
>            Reporter: Marios Trivyzas
>            Priority: Minor
>              Labels: pull-request-available
>          Time Spent: 2h 20m
>  Remaining Estimate: 0h
>
> Simplification of Cast chained calls can lead to unexpected behaviour:
> {code}CAST(CAST(CAST(123456 AS TINYINT) AS INT) AS BIGINT){code}
> is simplified to 
> {code}
> CAST(123456 AS BIGINT){code}
> 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}



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