Dag H. Wanvik created DERBY-6335:
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Summary: Improve performance of FETCH NEXT/OFFSET with ORDER BY
Key: DERBY-6335
URL: https://issues.apache.org/jira/browse/DERBY-6335
Project: Derby
Issue Type: Improvement
Components: SQL
Reporter: Dag H. Wanvik
We can utilize information about the number of rows to be retrieved to
a) optimize any sorting imposed by the ORDER BY by keeping only the top <next>
rows in memory,
b) inform the optimizer with more precise information about the number of rows
in those cases where such a constrict is a join participant.
For b) this would only work if <next> were known statically at compile time.
For a) this could work even with ? parameters,
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