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Posted to issues@flink.apache.org by "Sihua Zhou (JIRA)" <ji...@apache.org> on 2018/05/30 05:39:00 UTC

[jira] [Created] (FLINK-9475) introduce an approximate version of "select distinct"

Sihua Zhou created FLINK-9475:
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             Summary: introduce an approximate version of "select distinct"
                 Key: FLINK-9475
                 URL: https://issues.apache.org/jira/browse/FLINK-9475
             Project: Flink
          Issue Type: New Feature
          Components: Table API &amp; SQL
    Affects Versions: 1.5.0
            Reporter: Sihua Zhou
            Assignee: Sihua Zhou


Base on the "Elastic Bloom Filter", it easy to implement an approximate version of "select distinct" that have an excellent performance. Its accuracy should be configurable, e.g. 95%, 98%.



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