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From "Aman Sinha (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (DRILL-3002) Can't plan inequality queries when scalar subquery has an expression with at least one distinct aggregate
Date Tue, 16 Jun 2015 20:41:01 GMT

     [ https://issues.apache.org/jira/browse/DRILL-3002?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Aman Sinha updated DRILL-3002:
------------------------------
    Fix Version/s:     (was: 1.1.0)
                   1.2.0

> Can't plan inequality queries when scalar subquery has an expression with at least one
distinct aggregate
> ---------------------------------------------------------------------------------------------------------
>
>                 Key: DRILL-3002
>                 URL: https://issues.apache.org/jira/browse/DRILL-3002
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Query Planning & Optimization
>    Affects Versions: 1.0.0
>            Reporter: Victoria Markman
>            Assignee: Aman Sinha
>             Fix For: 1.2.0
>
>
> Fails with mix of of distinct/non distinct scalar aggregates on the same column:
> {code}
> 0: jdbc:drill:schema=dfs> select * from t1 where a1 > ( select count(a2) + count(distinct
a2) from t2);
> Error: SYSTEM ERROR: This query cannot be planned possibly due to either a cartesian
join or an inequality join
> [Error Id: 69c0feda-6284-4a76-b1f7-bbc43a099a20 on atsqa4-133.qa.lab:31010] (state=,code=0)
> {code}
> Works with two distinct aggregates in expression:
> {code}
> 0: jdbc:drill:schema=dfs> select * from t1 where a1 > ( select count(distinct a2)
+ count(distinct a2) from t2);
> +------------+------------+------------+
> |     a1     |     b1     |     c1     |
> +------------+------------+------------+
> +------------+------------+------------+
> No rows selected (0.226 seconds)
> {code}
> Fails with two distinct aggregates on different columns:
> {code}
> 0: jdbc:drill:schema=dfs> select * from t1 where a1 > ( select count(distinct a2)
+ count(distinct b2) from t2);
> Error: SYSTEM ERROR: This query cannot be planned possibly due to either a cartesian
join or an inequality join
> [Error Id: 80b10ec8-add6-45fd-8f1a-1e68852936a2 on atsqa4-133.qa.lab:31010] (state=,code=0)
> 0: jdbc:drill:schema=dfs> 
> {code}
> Works with two non distinct scalar aggregates:
> {code}
> 0: jdbc:drill:schema=dfs> select * from t1 where a1 > ( select count(a2) + count(a2)
from t2);
> +------------+------------+------------+
> |     a1     |     b1     |     c1     |
> +------------+------------+------------+
> +------------+------------+------------+
> No rows selected (0.244 seconds)
> {code}



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