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https://issues.apache.org/jira/browse/FLINK-22109?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17316058#comment-17316058
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MaChengLong commented on FLINK-22109:
-------------------------------------
It seems TypeInferenceOperandInference.inferOperandTypes thrown a
CalciteContextException when call SqlValidatorImpl ,let me fix this bug do you
mind ?
> Misleading exception message if the number of arguments of a nested function
> is incorrect
> -----------------------------------------------------------------------------------------
>
> Key: FLINK-22109
> URL: https://issues.apache.org/jira/browse/FLINK-22109
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / Planner
> Affects Versions: 1.13.0
> Reporter: Caizhi Weng
> Priority: Major
>
> Add the following test case to ScalarFunctionsTest to reproduce this issue.
> {code:scala}
> @Test
> def myTest(): Unit = {
> testSqlApi(s"IFNULL(SUBSTR('abc'), 'def')", "abc")
> }
> {code}
> The exception stack is
> {code}
> org.apache.flink.table.api.ValidationException: SQL validation failed.
> Unexpected error in type inference logic of function 'IFNULL'. This is a bug.
> at
> org.apache.flink.table.planner.calcite.FlinkPlannerImpl.org$apache$flink$table$planner$calcite$FlinkPlannerImpl$$validate(FlinkPlannerImpl.scala:155)
> at
> org.apache.flink.table.planner.calcite.FlinkPlannerImpl.validate(FlinkPlannerImpl.scala:108)
> at
> org.apache.flink.table.planner.expressions.utils.ExpressionTestBase.org$apache$flink$table$planner$expressions$utils$ExpressionTestBase$$addSqlTestExpr(ExpressionTestBase.scala:282)
> at
> org.apache.flink.table.planner.expressions.utils.ExpressionTestBase.testSqlApi(ExpressionTestBase.scala:188)
> at
> org.apache.flink.table.planner.expressions.ScalarFunctionsTest.myTest(ScalarFunctionsTest.scala:4067)
> 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$1.runReflectiveCall(FrameworkMethod.java:50)
> at
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
> at
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
> at
> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
> at
> org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
> at
> org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
> at
> org.junit.rules.ExpectedException$ExpectedExceptionStatement.evaluate(ExpectedException.java:239)
> at org.junit.rules.RunRules.evaluate(RunRules.java:20)
> 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$2.evaluate(ParentRunner.java:268)
> at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
> at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
> at
> com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
> at
> com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
> at
> com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:230)
> at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:58)
> Caused by: org.apache.flink.table.api.TableException: Unexpected error in
> type inference logic of function 'IFNULL'. This is a bug.
> at
> org.apache.flink.table.types.inference.TypeInferenceUtil.createUnexpectedException(TypeInferenceUtil.java:203)
> at
> org.apache.flink.table.planner.functions.inference.TypeInferenceOperandInference.inferOperandTypes(TypeInferenceOperandInference.java:74)
> at
> org.apache.calcite.sql.validate.SqlValidatorImpl.inferUnknownTypes(SqlValidatorImpl.java:1907)
> at
> org.apache.calcite.sql.validate.SqlValidatorImpl.expandSelectItem(SqlValidatorImpl.java:419)
> at
> org.apache.calcite.sql.validate.SqlValidatorImpl.validateSelectList(SqlValidatorImpl.java:4061)
> at
> org.apache.calcite.sql.validate.SqlValidatorImpl.validateSelect(SqlValidatorImpl.java:3347)
> 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:997)
> at
> org.apache.calcite.sql.validate.SqlValidatorImpl.validateQuery(SqlValidatorImpl.java:975)
> at org.apache.calcite.sql.SqlSelect.validate(SqlSelect.java:232)
> at
> org.apache.calcite.sql.validate.SqlValidatorImpl.validateScopedExpression(SqlValidatorImpl.java:952)
> at
> org.apache.calcite.sql.validate.SqlValidatorImpl.validate(SqlValidatorImpl.java:704)
> at
> org.apache.flink.table.planner.calcite.FlinkPlannerImpl.org$apache$flink$table$planner$calcite$FlinkPlannerImpl$$validate(FlinkPlannerImpl.scala:150)
> ... 30 more
> Caused by: org.apache.calcite.runtime.CalciteContextException: From line 1,
> column 15 to line 1, column 27: Invalid number of arguments to function
> 'SUBSTR'. Was expecting 2 arguments
> 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$ExInstWithCause.ex(Resources.java:467)
> at org.apache.calcite.sql.SqlUtil.newContextException(SqlUtil.java:883)
> at org.apache.calcite.sql.SqlUtil.newContextException(SqlUtil.java:868)
> at
> org.apache.calcite.sql.validate.SqlValidatorImpl.newValidationError(SqlValidatorImpl.java:4861)
> at
> org.apache.calcite.sql.validate.SqlValidatorImpl.handleUnresolvedFunction(SqlValidatorImpl.java:1804)
> at org.apache.calcite.sql.SqlFunction.deriveType(SqlFunction.java:321)
> at org.apache.calcite.sql.SqlFunction.deriveType(SqlFunction.java:226)
> at
> org.apache.calcite.sql.validate.SqlValidatorImpl$DeriveTypeVisitor.visit(SqlValidatorImpl.java:5710)
> at
> org.apache.calcite.sql.validate.SqlValidatorImpl$DeriveTypeVisitor.visit(SqlValidatorImpl.java:5697)
> at org.apache.calcite.sql.SqlCall.accept(SqlCall.java:139)
> at
> org.apache.calcite.sql.validate.SqlValidatorImpl.deriveTypeImpl(SqlValidatorImpl.java:1736)
> at
> org.apache.calcite.sql.validate.SqlValidatorImpl.deriveType(SqlValidatorImpl.java:1727)
> at
> org.apache.flink.table.planner.functions.inference.CallBindingCallContext$1.get(CallBindingCallContext.java:69)
> at
> org.apache.flink.table.planner.functions.inference.CallBindingCallContext$1.get(CallBindingCallContext.java:64)
> at java.util.AbstractList$Itr.next(AbstractList.java:358)
> at java.util.Iterator.forEachRemaining(Iterator.java:116)
> at
> java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
> at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
> at
> java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
> at
> java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
> at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
> at
> java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
> at
> org.apache.flink.table.types.inference.strategies.CommonArgumentTypeStrategy.inferArgumentType(CommonArgumentTypeStrategy.java:58)
> at
> org.apache.flink.table.types.inference.strategies.SequenceInputTypeStrategy.inferInputTypes(SequenceInputTypeStrategy.java:76)
> at
> org.apache.flink.table.planner.functions.inference.TypeInferenceOperandInference.inferOperandTypesOrError(TypeInferenceOperandInference.java:90)
> at
> org.apache.flink.table.planner.functions.inference.TypeInferenceOperandInference.inferOperandTypes(TypeInferenceOperandInference.java:70)
> ... 42 more
> Caused by: org.apache.calcite.sql.validate.SqlValidatorException: Invalid
> number of arguments to function 'SUBSTR'. Was expecting 2 arguments
> 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$ExInstWithCause.ex(Resources.java:467)
> at org.apache.calcite.runtime.Resources$ExInst.ex(Resources.java:560)
> ... 67 more
> {code}
> The topmost exception message (This is a bug) is really misleading.
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