xuyang created FLINK-33941:
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Summary: Use field index instead of field name about window time
column
Key: FLINK-33941
URL: https://issues.apache.org/jira/browse/FLINK-33941
Project: Flink
Issue Type: Technical Debt
Components: Table SQL / Planner
Reporter: xuyang
In some exec nodes like StreamExecGroupWindowAggregate and some rules like
BatchPhysicalWindowAggregateRule, planner uses "AggregateUtil#timeFieldIndex"
to access the actual time field index, instead of using the time field index in
LogicalWindow#timeAttribute directly. However, it would be more formal to use
the field index instead of the column field.
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