Viktor Batytskyi created CALCITE-1388:
-----------------------------------------
Summary: Error during RelNode to sql conversion
Key: CALCITE-1388
URL: https://issues.apache.org/jira/browse/CALCITE-1388
Project: Calcite
Issue Type: Bug
Components: core
Environment: Oracle JDK 1.8
Reporter: Viktor Batytskyi
Assignee: Julian Hyde
The following query contains ROLLUP operator in GROUP BY clause.
```
SELECT player_id, video_id, SUM(clicks)
FROM Table
GROUP BY ROLLUP((player_id, video_id))
```
After the string sql is parsed and validated by executing:
```
val planner = Frameworks.getPlanner(config)
val sqlNode = planner.parse(mockedSql)
val validatedSql = planner.validate(sqlNode)
val relExpression = planner.rel(validatedSql).project()
```
The resulting relExpression can't be transformed back to a query:
````
private val VERTICA = SqlDialect.DatabaseProduct.VERTICA.getDialect
....
val sql = new RelToSqlConverter(VERTICA).visitChild(0,
relNode).asQuery.toSqlString(VERTICA).getSql
````
The exception is thrown:
```
Caused by: java.lang.reflect.InvocationTargetException: null
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.apache.calcite.util.ReflectUtil$2.invoke(ReflectUtil.java:531)
... 29 common frames omitted
Caused by: java.lang.AssertionError: Internal error: While invoking method
'public org.apache.calcite.rel.rel2sql.SqlImplementor$Result
org.apache.calcite.rel.rel2sql.RelToSqlConverter.visit(org.apache.calcite.rel.core.Project)'
at org.apache.calcite.util.Util.newInternal(Util.java:792)
at org.apache.calcite.util.ReflectUtil$2.invoke(ReflectUtil.java:534)
at
org.apache.calcite.rel.rel2sql.RelToSqlConverter.dispatch(RelToSqlConverter.java:80)
at
org.apache.calcite.rel.rel2sql.RelToSqlConverter.visitChild(RelToSqlConverter.java:84)
at
org.apache.calcite.rel.rel2sql.RelToSqlConverter.visit(RelToSqlConverter.java:125)
... 34 common frames omitted
Caused by: java.lang.reflect.InvocationTargetException: null
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.apache.calcite.util.ReflectUtil$2.invoke(ReflectUtil.java:531)
... 37 common frames omitted
Caused by: java.lang.IndexOutOfBoundsException: Index: 2, Size: 2
at java.util.ArrayList.rangeCheck(ArrayList.java:653)
at java.util.ArrayList.get(ArrayList.java:429)
at org.apache.calcite.sql.SqlNodeList.get(SqlNodeList.java:93)
at
org.apache.calcite.rel.rel2sql.SqlImplementor$Result$1.field(SqlImplementor.java:781)
at
org.apache.calcite.rel.rel2sql.SqlImplementor$Context.toSql(SqlImplementor.java:450)
at
org.apache.calcite.rel.rel2sql.RelToSqlConverter.visit(RelToSqlConverter.java:133)
... 42 common frames omitted
```
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