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https://issues.apache.org/jira/browse/CALCITE-902?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Julian Hyde updated CALCITE-902:
--------------------------------
Summary: Match nullability when reducing expressions in a Project (was:
ReduceExpressionsRule(esp, PROJECT_INSTANCE) does not work with columns that
allow null values )
> Match nullability when reducing expressions in a Project
> --------------------------------------------------------
>
> Key: CALCITE-902
> URL: https://issues.apache.org/jira/browse/CALCITE-902
> Project: Calcite
> Issue Type: Bug
> Reporter: Pengcheng Xiong
> Assignee: Julian Hyde
> Fix For: 1.5.0-incubating
>
>
> Repo steps:
> {code}
> @Test
> public void testReduceConstants20() throws Exception {
> HepProgram program = new HepProgramBuilder()
>
> .addRuleInstance(ReduceExpressionsRule.PROJECT_INSTANCE)
>
> .addRuleInstance(ReduceExpressionsRule.FILTER_INSTANCE)
>
> .addRuleInstance(ReduceExpressionsRule.JOIN_INSTANCE).build();
> checkPlanning(program, "select mgr from emp where mgr=10");
> }
> {code}
> failing info.:
> {code}
> testReduceConstants20(org.apache.calcite.test.RelOptRulesTest) Time elapsed:
> 0.019 sec <<< FAILURE!
> java.lang.AssertionError: type mismatch:
> type1:
> INTEGER NOT NULL
> type2:
> INTEGER
> at org.apache.calcite.plan.RelOptUtil.eq(RelOptUtil.java:1664)
> at org.apache.calcite.rex.RexUtil.compatibleTypes(RexUtil.java:582)
> at org.apache.calcite.rel.core.Project.isValid(Project.java:182)
> at org.apache.calcite.rel.core.Project.<init>(Project.java:85)
> at
> org.apache.calcite.rel.logical.LogicalProject.<init>(LogicalProject.java:64)
> at
> org.apache.calcite.rel.logical.LogicalProject.create(LogicalProject.java:123)
> at
> org.apache.calcite.rel.rules.ReduceExpressionsRule$2.onMatch(ReduceExpressionsRule.java:199)
> at
> org.apache.calcite.plan.AbstractRelOptPlanner.fireRule(AbstractRelOptPlanner.java:326)
> at org.apache.calcite.plan.hep.HepPlanner.applyRule(HepPlanner.java:515)
> at
> org.apache.calcite.plan.hep.HepPlanner.applyRules(HepPlanner.java:392)
> at
> org.apache.calcite.plan.hep.HepPlanner.executeInstruction(HepPlanner.java:255)
> at
> org.apache.calcite.plan.hep.HepInstruction$RuleInstance.execute(HepInstruction.java:125)
> at
> org.apache.calcite.plan.hep.HepPlanner.executeProgram(HepPlanner.java:207)
> at
> org.apache.calcite.plan.hep.HepPlanner.findBestExp(HepPlanner.java:194)
> at
> org.apache.calcite.test.RelOptTestBase.checkPlanning(RelOptTestBase.java:132)
> at
> org.apache.calcite.test.RelOptTestBase.checkPlanning(RelOptTestBase.java:84)
> at
> org.apache.calcite.test.RelOptTestBase.checkPlanning(RelOptTestBase.java:73)
> at
> org.apache.calcite.test.RelOptRulesTest.testReduceConstants20(RelOptRulesTest.java:794)
> Results :
> Failed tests:
>
> RelOptRulesTest.testReduceConstants20:794->RelOptTestBase.checkPlanning:73->RelOptTestBase.checkPlanning:84->RelOptTestBase.checkPlanning:132
> type mismatch:
> {code}
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