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?
