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From Jiarong Wei <vca...@gmail.com>
Subject Unexpected NullPointerException occurred in parsing
Date Sun, 05 Feb 2017 06:57:23 GMT
I recently got an unexpected NullPointerException when parsing SQL (listed
below) using Calcite:


> SELECT "t0"."countryName" "d0", SUM(1) "m0"
> FROM "wikiticker" "t0"
> GROUP BY "t0"."countryName


Exception in thread "main" java.sql.SQLException: Error while executing SQL
> "SELECT "t0"."countryName" "d0",
>   SUM(1) "m0"
> FROM "wikiticker" "t0"
> GROUP BY "t0"."countryName"
> ": null
> 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:147)
> at
> org.apache.calcite.avatica.AvaticaStatement.executeQuery(AvaticaStatement.java:208)
> at Main.main(Main.java:99)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:606)
> at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)
> Caused by: java.lang.NullPointerException
> at
> org.apache.calcite.interpreter.AggregateNode.getAccumulator(AggregateNode.java:134)
> at
> org.apache.calcite.interpreter.AggregateNode.<init>(AggregateNode.java:86)
> at org.apache.calcite.interpreter.Nodes$CoreCompiler.visit(Nodes.java:47)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:606)
> at
> org.apache.calcite.util.ReflectUtil.invokeVisitorInternal(ReflectUtil.java:257)
> at org.apache.calcite.util.ReflectUtil.invokeVisitor(ReflectUtil.java:214)
> at
> org.apache.calcite.util.ReflectUtil$1.invokeVisitor(ReflectUtil.java:471)
> at
> org.apache.calcite.interpreter.Interpreter$Compiler.visit(Interpreter.java:476)
> at
> org.apache.calcite.interpreter.Interpreter$Compiler.visitRoot(Interpreter.java:433)
> at org.apache.calcite.interpreter.Interpreter.<init>(Interpreter.java:75)
> at Baz.bind(Unknown Source)
> at
> org.apache.calcite.jdbc.CalcitePrepare$CalciteSignature.enumerable(CalcitePrepare.java:327)
> at
> org.apache.calcite.jdbc.CalciteConnectionImpl.enumerable(CalciteConnectionImpl.java:289)
> at
> org.apache.calcite.jdbc.CalciteMetaImpl._createIterable(CalciteMetaImpl.java:553)
> at
> org.apache.calcite.jdbc.CalciteMetaImpl.createIterable(CalciteMetaImpl.java:544)
> at
> org.apache.calcite.avatica.AvaticaResultSet.execute(AvaticaResultSet.java:187)
> at
> org.apache.calcite.jdbc.CalciteResultSet.execute(CalciteResultSet.java:77)
> at
> org.apache.calcite.jdbc.CalciteResultSet.execute(CalciteResultSet.java:49)
> at
> org.apache.calcite.avatica.AvaticaConnection$1.execute(AvaticaConnection.java:605)
> at
> org.apache.calcite.jdbc.CalciteMetaImpl.prepareAndExecute(CalciteMetaImpl.java:599)
> at
> org.apache.calcite.avatica.AvaticaConnection.prepareAndExecuteInternal(AvaticaConnection.java:613)
> at
> org.apache.calcite.avatica.AvaticaStatement.executeInternal(AvaticaStatement.java:139)
> ... 7 more
> Process finished with exit code 1


It seemed as a bug of Calcite? I'd appreciate if someone could give me a
hand?

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