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https://issues.apache.org/jira/browse/CALCITE-5891?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mihai Budiu closed CALCITE-5891.
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Resolution: Workaround
> Create a test fixture that would apply PROJECT_REDUCE_EXPRESSIONS to all
> tests in SqlOperatorTest
> --------------------------------------------------------------------------------------------------
>
> Key: CALCITE-5891
> URL: https://issues.apache.org/jira/browse/CALCITE-5891
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Affects Versions: 1.35.0
> Reporter: Mihai Budiu
> Assignee: Mihai Budiu
> Priority: Major
>
> SqlOperatorTest has many tests, including end-to-end tests.
> However, none of these tests exercise the PROJECT_REDUCE_EXPRESSION rules,
> which often produce different results than these tests for constant
> expressions.
> Ideally we should be able to subclass SqlOperatorTest and use a fixture that
> also applies this optimization prior to evaluation.
> I have marked this as a {*}major priority{*}, because I suspect it would
> catch many bugs with minimal effort. (I have found at least 10 so far.)
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