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From Albert <zinki...@gmail.com>
Subject Re: Unexpected NullPointerException occurred in parsing
Date Mon, 06 Feb 2017 01:05:16 GMT
> SELECT "t0"."countryName" AS "d0", SUM(1) AS "m0"
> FROM "wikiticker" "t0"
> GROUP BY "t0"."countryName

On Sun, Feb 5, 2017 at 2:57 PM, Jiarong Wei <vcamx3@gmail.com> wrote:

> 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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