[jira] [Updated] (CALCITE-7870) RexSimplify removes some casts which change semantics

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CALCITE-7870?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated CALCITE-7870:
------------------------------------
    Labels: pull-request-available  (was: )

> RexSimplify removes some casts which change semantics
> -----------------------------------------------------
>
>                 Key: CALCITE-7870
>                 URL: https://issues.apache.org/jira/browse/CALCITE-7870
>             Project: Calcite
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 1.42.0
>            Reporter: Mihai Budiu
>            Assignee: Mihai Budiu
>            Priority: Minor
>              Labels: pull-request-available
>
> RexSimplify will remove a cast from INT to DOUBLE in some circumstances where it shouldn't:
> CAST(CAST(i AS DOUBLE) AS VARCHAR)
> When i is 2, if the cast is not removed the result is 2.0. RexSimplify removes the cast, and the result becomes just 2.
> There are other examples:
> CAST(CAST(double AS VARCHAR(3))
> When d is 6.666666 removing the cast gives 6.66666, but the result should be 6.6.



--
This message was sent by Atlassian Jira
(v8.20.10#820010)