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https://issues.apache.org/jira/browse/CALCITE-6870?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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xiong duan resolved CALCITE-6870.
---------------------------------
Fix Version/s: 1.39.0
Resolution: Fixed
> The FilterToCalcRule/ProjectToCalcRule should not convert a Filter/Project to
> Calc when it contains Subquery
> ------------------------------------------------------------------------------------------------------------
>
> Key: CALCITE-6870
> URL: https://issues.apache.org/jira/browse/CALCITE-6870
> Project: Calcite
> Issue Type: Bug
> Reporter: xiong duan
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.39.0
>
>
> The unit test in RelOptRulesTest:
> {code:java}
> @Test void testFilterToCalc() {
> final String sql = "select ename from emp where sal > all (select comm from
> emp)";
> sql(sql)
> .withRule(CoreRules.FILTER_TO_CALC)
> .checkUnchanged();
> } {code}
> Now the Calcite's SubQueryRemoveRule includes FILTER_SUB_QUERY_TO_CORRELATE、
> PROJECT_SUB_QUERY_TO_CORRELATE、JOIN_SUB_QUERY_TO_CORRELATE.
> It doesn't have a CALC_SUB_QUERY_TO_CORRELATE. When the plan has CALC with
> Subquery, then it can't be converted.
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