sunjincheng created FLINK-6839:
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Summary: Improve SQL OVER alias When only one OVER window agg in selection.
Key: FLINK-6839
URL:
https://issues.apache.org/jira/browse/FLINK-6839 Project: Flink
Issue Type: Improvement
Reporter: sunjincheng
For OVER SQL:
{code}
SELECT a COUNT(c) OVER (ORDER BY proctime RANGE BETWEEN INTERVAL '10' SECOND PRECEDING AND CURRENT ROW) as cnt1 FROM MyTable
{code}
We expect plan {{DataStreamCalc(select=[a, w0$o0 AS cnt1]) But we get {{DataStreamCalc(select=[a, w0$o0 AS $1]) }}. this improve only for plan check. the functional is work well in nested queries，e.g.:
{code}
SELECT cnt1 from (SELECT a COUNT(c) OVER (ORDER BY proctime RANGE BETWEEN INTERVAL '10' SECOND PRECEDING AND CURRENT ROW) as cnt1 FROM MyTable)
{code}
The SQL above is work well. which mentioned in [FLINK-6760|
https://issues.apache.org/jira/browse/FLINK-6760].
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