[jira] [Created] (CALCITE-2404) Accessing structured-types is not implemented by the runtime

["Stamatis Zampetakis (JIRA)" <ji...@apache.org>]

Stamatis Zampetakis created CALCITE-2404:
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             Summary: Accessing structured-types is not implemented by the runtime
                 Key: CALCITE-2404
                 URL: https://issues.apache.org/jira/browse/CALCITE-2404
             Project: Calcite
          Issue Type: Bug
          Components: core
    Affects Versions: 1.17.0
            Reporter: Stamatis Zampetakis
            Assignee: Julian Hyde


Queries on tables containing structured types cannot be executed by the Calcite runtime. A plan like the one that follows (taken from [CALCITE-2220|https://issues.apache.org/jira/browse/CALCITE-2220]) can be translated to neither Bindable nor EnumerableConvention.

 
{noformat}
LogicalProject(EXPR$0=[$0])
  LogicalProject(EXPR$0$0=[ITEM($6, 1).EMPNO], EXPR$0$1=[ITEM($6, 1).ENAME], EXPR$0$2=[ITEM($6, 1).DETAIL])
    LogicalProject(DEPTNO=[$0], NAME=[$1], TYPE=[$2.TYPE], DESC=[$2.DESC], A=[$2.OTHERS.A], B=[$2.OTHERS.B], EMPLOYEES=[$3])
      LogicalTableScan(table=[[CATALOG, SALES, DEPT_NESTED]])
{noformat}
 

More precisely, if a logical plan contains a RexFieldAccess expression that does not refer to a RexCorrelVariable it cannot be handled by the RexToLixTranslator. The translation will fail when calling

[RexToLixTranslator#translate0|[https://github.com/apache/calcite/blob/5bbc501a565494442784f65870a20cd65a5016f4/core/src/main/java/org/apache/calcite/adapter/enumerable/RexToLixTranslator.java#L686]|https://github.com/apache/calcite/blob/5bbc501a565494442784f65870a20cd65a5016f4/core/src/main/java/org/apache/calcite/adapter/enumerable/RexToLixTranslator.java#L686].]

 



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