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Posted to issues-all@impala.apache.org by "Steve Carlin (Jira)" <ji...@apache.org> on 2026/07/10 23:10:00 UTC

[jira] [Resolved] (IMPALA-14903) Calcite planner: Simplify String RelDataType

     [ https://issues.apache.org/jira/browse/IMPALA-14903?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steve Carlin resolved IMPALA-14903.
-----------------------------------
    Resolution: Fixed

> Calcite planner: Simplify String RelDataType
> --------------------------------------------
>
>                 Key: IMPALA-14903
>                 URL: https://issues.apache.org/jira/browse/IMPALA-14903
>             Project: IMPALA
>          Issue Type: Sub-task
>            Reporter: Steve Carlin
>            Priority: Major
>
> By default, Calcite always sets string literals to type "char" whereas Impala needs string literals to be type "string".
> The current code committed works around this by creating a cast around the column. This complicated the code.  For example, A Values RelNode cannot have a cast, so a Project RelNode had to be created on top of a Values RelNode to handle the cast.
> This code should be simplified



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