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https://issues.apache.org/jira/browse/IGNITE-27395?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Maksim Zhuravkov reassigned IGNITE-27395:
-----------------------------------------
Assignee: Maksim Zhuravkov
> Sql. Expressions with dynamic parameters and NULL (e.g. NULL + ?int) are not
> simplified to NULL after calcite 1.41
> ------------------------------------------------------------------------------------------------------------------
>
> Key: IGNITE-27395
> URL: https://issues.apache.org/jira/browse/IGNITE-27395
> Project: Ignite
> Issue Type: Improvement
> Components: sql ai3
> Reporter: Maksim Zhuravkov
> Assignee: Maksim Zhuravkov
> Priority: Major
> Labels: ignite-3
> Fix For: 3.2
>
>
> Calcite 1.41 made some changes related to expression simplification.
> For example (NULL + ?int) expression, that is successfully simplified in
> calcite 1.40, is no longer simplified to NULL, because this code no calls
> isSafeExpression(e) that is false for (NULL + ?int) so the branch with
> simplification code is not taken.
> {noformat} Calcite 1.41
> RexNode simplify(RexNode e, RexUnknownAs unknownAs) {
> if (isSafeExpression(e) && STRONG.isNull(e)) {
> ...
> }
> }
> {noformat}
> In calcite 1.40 `isSafeExpression(e)` is also returns `false`, but
> `simplify` does not perform `isSafeExpression(e)` check.
> Calcite issue that introduced that change
> https://issues.apache.org/jira/browse/CALCITE-7032
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