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Posted to dev@kylin.apache.org by "Yifan Zhang (JIRA)" <ji...@apache.org> on 2017/04/10 10:56:41 UTC

[jira] [Created] (KYLIN-2539) Useless filter dimension will impact cuboid selection.

Yifan Zhang created KYLIN-2539:
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             Summary: Useless filter dimension will impact cuboid selection.
                 Key: KYLIN-2539
                 URL: https://issues.apache.org/jira/browse/KYLIN-2539
             Project: Kylin
          Issue Type: Bug
            Reporter: Yifan Zhang


Query1: select count(*) from test_kylin_fact where (cal_dt > DATE'2012-01-01') and (seller_id is null or 1 = 1)
Query2: select count(*) from test_kylin_fact where (cal_dt > DATE'2012-01-01')

Q1 and Q2 return identical result but hit different cuboid: 43051 and 1310735, and result in different query performance.



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