[jira] [Created] (FLINK-7003) "select * from" in Flink SQL should not flatten all fields in the table by default

[Shang Yuanchun (Jira)]

Shuyi Chen created FLINK-7003:
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             Summary: "select * from" in Flink SQL should not flatten all fields in the table by default
                 Key: FLINK-7003
                 URL: https://issues.apache.org/jira/browse/FLINK-7003
             Project: Flink
          Issue Type: Bug
            Reporter: Shuyi Chen


Currently, CompositeRelDataType is extended from RelRecordType(StructKind.PEEK_FIELDS, ...).  In Calcite, StructKind.PEEK_FIELDS would allow us to peek fields for nested types. However, when we use "select * from", calcite will flatten all nested fields that is marked as StructKind.PEEK_FIELDS in the table.



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