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Posted to issues@ignite.apache.org by "Iurii Gerzhedovich (Jira)" <ji...@apache.org> on 2026/01/12 15:42:00 UTC

[jira] [Updated] (IGNITE-21559) Sql. Implement expression traversal that checks whether expression is deterministic

     [ https://issues.apache.org/jira/browse/IGNITE-21559?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Iurii Gerzhedovich updated IGNITE-21559:
----------------------------------------
    Component/s: sql ai3
                     (was: sql)

> Sql. Implement expression traversal that checks whether expression is deterministic
> -----------------------------------------------------------------------------------
>
>                 Key: IGNITE-21559
>                 URL: https://issues.apache.org/jira/browse/IGNITE-21559
>             Project: Ignite
>          Issue Type: Improvement
>          Components: sql ai3
>    Affects Versions: 3.0
>            Reporter: Maksim Zhuravkov
>            Priority: Major
>              Labels: ignite-3
>
> Let's implement a utility for determining whether an expression tree (RexNodes) is deterministic or not. 
> Expression is deterministic if it is constant expression, dynamic parameter, or a function like CURRENT_TIMESTAMP is evaluated once per session, or deterministic function.
> Non deterministic functions in AI-3: GEN_RANDOM_UUID.
> Check to see if there are any other non-deterministic functions as well and mark them accordingly.



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