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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