DongShengHe created CALCITE-7819:
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Summary: RelMdTableReferences returns null for TableFunctionScan
with relational inputs
Key: CALCITE-7819
URL: https://issues.apache.org/jira/browse/CALCITE-7819
Project: Calcite
Issue Type: Bug
Reporter: DongShengHe
RelMetadataQuery#getTableReferences returns null when the relational
plan contains a TableFunctionScan, even when the TableFunctionScan has
a relational input containing a TableScan.
For example, the TUMBLE window table function produces:
{code:java}
LogicalProject
LogicalTableFunctionScan
LogicalProject
LogicalTableScan(table=[[hr, employee]]){code}
Calling:
mq.getTableReferences(root)
returns null because RelMdTableReferences does not provide an overload
for TableFunctionScan and falls back to the RelNode catch-all handler.
Expected result:
{code:java}
[hr, employee].#0 {code}
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