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Posted to notifications@asterixdb.apache.org by "Ali Alsuliman (JIRA)" <ji...@apache.org> on 2018/02/20 01:40:00 UTC

[jira] [Created] (ASTERIXDB-2292) Selecting the kth element from a subquery with ORDER BY

Ali Alsuliman created ASTERIXDB-2292:
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             Summary: Selecting the kth element from a subquery with ORDER BY
                 Key: ASTERIXDB-2292
                 URL: https://issues.apache.org/jira/browse/ASTERIXDB-2292
             Project: Apache AsterixDB
          Issue Type: Improvement
          Components: COMP - Compiler
            Reporter: Ali Alsuliman


(select * from GBU g order by g.name)[k]

The plan for the above query orders, then listifies the result only to pick the kth element.

The query should be turned into:

select * from GBU g order by g.name limit 1 offset k

This is especially important when k = 0



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