Jiatao Tao created CALCITE-4345:
-----------------------------------
Summary: SUM CASE WHEN without else throws NPE
Key: CALCITE-4345
URL: https://issues.apache.org/jira/browse/CALCITE-4345
Project: Calcite
Issue Type: Bug
Components: core
Reporter: Jiatao Tao
Assignee: Jiatao Tao
Attachments: image-2020-10-19-16-59-44-900.png
Add a test in CsvTest:
{code:java}
@Test void testSumCaseWhenWithoutElse() throws SQLException {
sql("model", "select sum( CASE WHEN empno=10 THEN 1 END ) from EMPS").ok();
}
{code}
Will throw NPE
{code:java}
Caused by: java.lang.RuntimeException: Error while applying rule
AggregateCaseToFilterRule, args
[rel#18:LogicalAggregate.NONE.[](input=RelSubset#17,group={},EXPR$0=SUM($0)),
rel#16:LogicalProject.NONE.[](input=RelSubset#15,exprs=[CASE(=($0, 10), 1,
null:INTEGER)])] Caused by: java.lang.RuntimeException: Error while applying
rule AggregateCaseToFilterRule, args
[rel#18:LogicalAggregate.NONE.[](input=RelSubset#17,group={},EXPR$0=SUM($0)),
rel#16:LogicalProject.NONE.[](input=RelSubset#15,exprs=[CASE(=($0, 10), 1,
null:INTEGER)])] at
org.apache.calcite.plan.volcano.VolcanoRuleCall.onMatch(VolcanoRuleCall.java:257)
at
org.apache.calcite.plan.volcano.IterativeRuleDriver.drive(IterativeRuleDriver.java:58)
at
org.apache.calcite.plan.volcano.VolcanoPlanner.findBestExp(VolcanoPlanner.java:511)
at org.apache.calcite.tools.Programs.lambda$standard$3(Programs.java:271) at
org.apache.calcite.tools.Programs$SequenceProgram.run(Programs.java:331) at
org.apache.calcite.prepare.Prepare.optimize(Prepare.java:166) at
org.apache.calcite.prepare.Prepare.prepareSql(Prepare.java:299) at
org.apache.calcite.prepare.Prepare.prepareSql(Prepare.java:208) at
org.apache.calcite.prepare.CalcitePrepareImpl.prepare2_(CalcitePrepareImpl.java:642)
at
org.apache.calcite.prepare.CalcitePrepareImpl.prepare_(CalcitePrepareImpl.java:508)
at
org.apache.calcite.prepare.CalcitePrepareImpl.prepareSql(CalcitePrepareImpl.java:478)
at
org.apache.calcite.jdbc.CalciteConnectionImpl.parseQuery(CalciteConnectionImpl.java:231)
at
org.apache.calcite.jdbc.CalciteMetaImpl.prepareAndExecute(CalciteMetaImpl.java:558)
at
org.apache.calcite.avatica.AvaticaConnection.prepareAndExecuteInternal(AvaticaConnection.java:675)
at
org.apache.calcite.avatica.AvaticaStatement.executeInternal(AvaticaStatement.java:156)
... 63 more Caused by: java.lang.NullPointerException at
org.apache.calcite.rex.RexLiteral.intValue(RexLiteral.java:1152) at
org.apache.calcite.rel.rules.AggregateCaseToFilterRule.transform(AggregateCaseToFilterRule.java:231)
at
org.apache.calcite.rel.rules.AggregateCaseToFilterRule.onMatch(AggregateCaseToFilterRule.java:115)
at
org.apache.calcite.plan.volcano.VolcanoRuleCall.onMatch(VolcanoRuleCall.java:230)
... 77 more
{code}
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