[jira] [Created] (CALCITE-3002) Case statement fails with: SqlValidatorException: Cannot apply '=' to arguments of type ' = '.

["Egor Ryashin (JIRA)" <ji...@apache.org>]

Egor Ryashin created CALCITE-3002:
-------------------------------------

             Summary: Case statement fails with: SqlValidatorException: Cannot apply '=' to arguments of type '<INTEGER> = <BOOLEAN>'.
                 Key: CALCITE-3002
                 URL: https://issues.apache.org/jira/browse/CALCITE-3002
             Project: Calcite
          Issue Type: Bug
          Components: csv-adapter, druid
    Affects Versions: 1.19.0
            Reporter: Egor Ryashin


Query like
{code:java}
select (case empno when empno > 1 then 1 else empno end) from emps{code}
produces an error:
{noformat}
java.lang.RuntimeException: java.sql.SQLException: Error while executing SQL "select (case empno when empno > 1 then 1 else empno end) from emps": From line 1, column 9 to line 1, column 55: Cannot apply '=' to arguments of type '<INTEGER> = <BOOLEAN>'. Supported form(s): '<COMPARABLE_TYPE> = <COMPARABLE_TYPE>' at org.apache.calcite.test.CsvTest$Fluent.ok(CsvTest.java:1021) at org.apache.calcite.test.CsvTest.testSelectSingleProjectCase(CsvTest.java:188) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at org.junit.runners.ParentRunner.run(ParentRunner.java:363) at org.junit.runner.JUnitCore.run(JUnitCore.java:137) at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68) at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:51) at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:237) at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147) Caused by: java.sql.SQLException: Error while executing SQL "select (case empno when empno > 1 then 1 else empno end) from emps": From line 1, column 9 to line 1, column 55: Cannot apply '=' to arguments of type '<INTEGER> = <BOOLEAN>'. Supported form(s): '<COMPARABLE_TYPE> = <COMPARABLE_TYPE>' at org.apache.calcite.avatica.Helper.createException(Helper.java:56) at org.apache.calcite.avatica.Helper.createException(Helper.java:41) at org.apache.calcite.avatica.AvaticaStatement.executeInternal(AvaticaStatement.java:163) at org.apache.calcite.avatica.AvaticaStatement.executeQuery(AvaticaStatement.java:227) at org.apache.calcite.test.CsvTest.checkSql(CsvTest.java:358) at org.apache.calcite.test.CsvTest.access$300(CsvTest.java:67) at org.apache.calcite.test.CsvTest$Fluent.ok(CsvTest.java:1018) ... 28 more Caused by: org.apache.calcite.runtime.CalciteContextException: From line 1, column 9 to line 1, column 55: Cannot apply '=' to arguments of type '<INTEGER> = <BOOLEAN>'. Supported form(s): '<COMPARABLE_TYPE> = <COMPARABLE_TYPE>' at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at org.apache.calcite.runtime.Resources$ExInstWithCause.ex(Resources.java:463) at org.apache.calcite.sql.SqlUtil.newContextException(SqlUtil.java:783) at org.apache.calcite.sql.SqlUtil.newContextException(SqlUtil.java:768) at org.apache.calcite.sql.validate.SqlValidatorImpl.newValidationError(SqlValidatorImpl.java:4776) at org.apache.calcite.sql.SqlCallBinding.newValidationSignatureError(SqlCallBinding.java:280) at org.apache.calcite.sql.type.ComparableOperandTypeChecker.checkOperandTypes(ComparableOperandTypeChecker.java:66) at org.apache.calcite.sql.SqlOperator.checkOperandTypes(SqlOperator.java:659) at org.apache.calcite.sql.SqlOperator.validateOperands(SqlOperator.java:432) at org.apache.calcite.sql.SqlOperator.deriveType(SqlOperator.java:509) at org.apache.calcite.sql.SqlBinaryOperator.deriveType(SqlBinaryOperator.java:144) at org.apache.calcite.sql.validate.SqlValidatorImpl$DeriveTypeVisitor.visit(SqlValidatorImpl.java:5501) at org.apache.calcite.sql.validate.SqlValidatorImpl$DeriveTypeVisitor.visit(SqlValidatorImpl.java:5488) at org.apache.calcite.sql.SqlCall.accept(SqlCall.java:138) at org.apache.calcite.sql.validate.SqlValidatorImpl.deriveTypeImpl(SqlValidatorImpl.java:1635) at org.apache.calcite.sql.validate.SqlValidatorImpl.deriveType(SqlValidatorImpl.java:1620) at org.apache.calcite.sql.fun.SqlCaseOperator.checkOperandTypes(SqlCaseOperator.java:180) at org.apache.calcite.sql.SqlOperator.validateOperands(SqlOperator.java:432) at org.apache.calcite.sql.fun.SqlCaseOperator.deriveType(SqlCaseOperator.java:165) at org.apache.calcite.sql.validate.SqlValidatorImpl$DeriveTypeVisitor.visit(SqlValidatorImpl.java:5501) at org.apache.calcite.sql.validate.SqlValidatorImpl$DeriveTypeVisitor.visit(SqlValidatorImpl.java:5488) at org.apache.calcite.sql.SqlCall.accept(SqlCall.java:138) at org.apache.calcite.sql.validate.SqlValidatorImpl.deriveTypeImpl(SqlValidatorImpl.java:1635) at org.apache.calcite.sql.validate.SqlValidatorImpl.deriveType(SqlValidatorImpl.java:1620) at org.apache.calcite.sql.validate.SqlValidatorImpl.inferUnknownTypes(SqlValidatorImpl.java:1779) at org.apache.calcite.sql.validate.SqlValidatorImpl.expandSelectItem(SqlValidatorImpl.java:456) at org.apache.calcite.sql.validate.SqlValidatorImpl.validateSelectList(SqlValidatorImpl.java:4040) at org.apache.calcite.sql.validate.SqlValidatorImpl.validateSelect(SqlValidatorImpl.java:3303) at org.apache.calcite.sql.validate.SelectNamespace.validateImpl(SelectNamespace.java:60) at org.apache.calcite.sql.validate.AbstractNamespace.validate(AbstractNamespace.java:84) at org.apache.calcite.sql.validate.SqlValidatorImpl.validateNamespace(SqlValidatorImpl.java:973) at org.apache.calcite.sql.validate.SqlValidatorImpl.validateQuery(SqlValidatorImpl.java:949) at org.apache.calcite.sql.SqlSelect.validate(SqlSelect.java:216) at org.apache.calcite.sql.validate.SqlValidatorImpl.validateScopedExpression(SqlValidatorImpl.java:924) at org.apache.calcite.sql.validate.SqlValidatorImpl.validate(SqlValidatorImpl.java:628) at org.apache.calcite.sql2rel.SqlToRelConverter.convertQuery(SqlToRelConverter.java:552) at org.apache.calcite.prepare.Prepare.prepareSql(Prepare.java:264) at org.apache.calcite.prepare.Prepare.prepareSql(Prepare.java:230) at org.apache.calcite.prepare.CalcitePrepareImpl.prepare2_(CalcitePrepareImpl.java:772) at org.apache.calcite.prepare.CalcitePrepareImpl.prepare_(CalcitePrepareImpl.java:636) at org.apache.calcite.prepare.CalcitePrepareImpl.prepareSql(CalcitePrepareImpl.java:606) at org.apache.calcite.jdbc.CalciteConnectionImpl.parseQuery(CalciteConnectionImpl.java:230) at org.apache.calcite.jdbc.CalciteMetaImpl.prepareAndExecute(CalciteMetaImpl.java:550) at org.apache.calcite.avatica.AvaticaConnection.prepareAndExecuteInternal(AvaticaConnection.java:675) at org.apache.calcite.avatica.AvaticaStatement.executeInternal(AvaticaStatement.java:156) ... 32 more Caused by: org.apache.calcite.sql.validate.SqlValidatorException: Cannot apply '=' to arguments of type '<INTEGER> = <BOOLEAN>'. Supported form(s): '<COMPARABLE_TYPE> = <COMPARABLE_TYPE>' at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at org.apache.calcite.runtime.Resources$ExInstWithCause.ex(Resources.java:463) at org.apache.calcite.runtime.Resources$ExInst.ex(Resources.java:572) ... 75 more
{noformat}
Can be reproduced by running a unit test in org/apache/calcite/test/CsvTest.java like:
{code:java}
@Test public void testCase() throws SQLException {
sql("smart", "select (case empno when empno > 1 then 1 else empno end) from emps").ok();
}{code}
The same bug is reproduced in *Druid*.



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