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Posted to issues@calcite.apache.org by "Chunwei Lei (Jira)" <ji...@apache.org> on 2020/03/06 09:42:00 UTC
[jira] [Resolved] (CALCITE-3809) RexSimplify simplifies
nondeterministic function incorrectly
[ https://issues.apache.org/jira/browse/CALCITE-3809?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Chunwei Lei resolved CALCITE-3809.
----------------------------------
Resolution: Fixed
Fixed in [https://github.com/apache/calcite/commit/200a136dd3b2ca04a1d1283eb5a03a04388b1947].
> RexSimplify simplifies nondeterministic function incorrectly
> ------------------------------------------------------------
>
> Key: CALCITE-3809
> URL: https://issues.apache.org/jira/browse/CALCITE-3809
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.21.0
> Reporter: Chunwei Lei
> Assignee: Chunwei Lei
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.23.0
>
> Time Spent: 5h 20m
> Remaining Estimate: 0h
>
> For example, {{rand() = rand()}} will be simplified to {{IS NOT NULL(rand())}}, which is wrong because {{rand() = rand()}} might be false while {{IS NOT NULL(rand())}} is always true.
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