Jingsong Lee created FLINK-23107:
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Summary: Separate deduplicate rank from rank functions
Key: FLINK-23107
URL: https://issues.apache.org/jira/browse/FLINK-23107
Project: Flink
Issue Type: Improvement
Components: Table SQL / Runtime
Reporter: Jingsong Lee
Fix For: 1.14.0
SELECT * FROM (SELECT *, ROW_NUMBER() OVER (PARTITION BY d ORDER BY e DESC) AS
rownum from T) WHERE rownum=1
Actually above sql is a deduplicate rank instead of a normal rank. We should
separate the implementation for optimize the deduplicate rank and reduce bugs.
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