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https://issues.apache.org/jira/browse/CALCITE-6887?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17935025#comment-17935025
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Julian Hyde commented on CALCITE-6887:
--------------------------------------
Can you describe the issue in English? Don't make me (or anyone) read code to
understand the problem.
> In should distinct values with ReduceExpressionRule
> ---------------------------------------------------
>
> Key: CALCITE-6887
> URL: https://issues.apache.org/jira/browse/CALCITE-6887
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.38.0
> Reporter: Yu Xu
> Assignee: Yu Xu
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.40.0
>
>
> @Test void testReduceExpressionsWithIn() {
> final String sql = "select deptno, sal "
> + "from emp "
> + "where deptno in (1,1,2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,3,1) ";
> sql(sql).withRule(CoreRules.PROJECT_REDUCE_EXPRESSIONS)
> .check();
> }
>
> before:
> LogicalProject(DEPTNO=[$7], SAL=[$5])
> LogicalFilter(condition=[IN($7, {
> LogicalValues(tuples=[[\{ 1 }, \{ 1 }, \{ 2 }, \{ 1 }, \{ 1 }, \{ 1 }, \{ 1
> }, \{ 1 }, \{ 1 }, \{ 1 }, \{ 1 }, \{ 1 }, \{ 1 }, \{ 1 }, \{ 1 }, \{ 1 }, \{
> 1 }, \{ 1 }, \{ 1 }, \{ 3 }, \{ 1 }]])
> })])
> LogicalTableScan(table=[[CATALOG, SALES, EMP]])
>
> after:
> LogicalProject(DEPTNO=[$7], SAL=[$5])
> LogicalFilter(condition=[IN($7, {
> LogicalValues(tuples=[[\{ 1 }, \{ 2 }, \{ 3 }]])
> })])
> LogicalTableScan(table=[[CATALOG, SALES, EMP]])
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