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https://issues.apache.org/jira/browse/KYLIN-2313?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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liyang resolved KYLIN-2313.
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Resolution: Cannot Reproduce
> Cannot find a cube in a subquery case with count distinct
> ---------------------------------------------------------
>
> Key: KYLIN-2313
> URL: https://issues.apache.org/jira/browse/KYLIN-2313
> Project: Kylin
> Issue Type: Bug
> Components: Query Engine
> Affects Versions: v1.6.0
> Reporter: Dong Li
> Assignee: liyang
> Priority: Minor
> Fix For: v2.0.0
>
>
> With sample cube,
> The first query can find a cube and give correct result:
> select p.part_dt, p.lstg_site_id, p.grp, count(distinct user_id), sum(price)
> from (
> select t.part_dt, t.lstg_site_id, t.user_id, t.price,
> case t.lstg_format_name when 'ABIN' then 'AAA' when 'BBIN' then 'BBB' else
> 'CCC' end as grp from kylin_sales t) p
> group by p.part_dt, p.lstg_site_id, p.grp
> The second query will throw exception: cannot find any realization:
> select p.part_dt, p.lstg_site_id, p.grp, count(distinct user_id), sum(price)
> from (
> select t.part_dt, t.lstg_site_id, t.user_id, t.price,
> case t.lstg_format_name when 'ABIN' then 'AAA'
> when 'BBIN' then 'BBB'
> else 'CCC' end as grp
> from kylin_sales t
> ) p
> where p.part_dt=DATE'2013-01-01'
> group by p.part_dt, p.lstg_site_id, p.grp
> Error message:
> Error while executing SQL "select p.part_dt, p.lstg_site_id, p.grp,
> count(distinct user_id), sum(price) from ( select t.part_dt, t.lstg_site_id,
> t.user_id, t.price, case t.lstg_format_name when 'ABIN' then 'AAA' when
> 'BBIN' then 'BBB' else 'CCC' end as grp from kylin_sales t ) p where
> p.part_dt='2013-01-01' group by p.part_dt, p.lstg_site_id, p.grp LIMIT
> 50000": Can't find any realization. Please confirm with providers. SQL
> digest: fact table DEFAULT.KYLIN_SALES,group by [DEFAULT.KYLIN_SALES.PART_DT,
> DEFAULT.KYLIN_SALES.LSTG_SITE_ID,
> UNKNOWN_MODEL:DEFAULT._KYLIN_TABLE.GRP],filter on
> [DEFAULT.KYLIN_SALES.PART_DT],with aggregates[FunctionDesc
> [expression=COUNT_DISTINCT, parameter=ParameterDesc [type=column,
> value=USER_ID, nextParam=null], returnType=null], FunctionDesc
> [expression=SUM, parameter=ParameterDesc [type=column, value=PRICE,
> nextParam=null], returnType=null]].
> The difference between these 2 queries is: there's one condition in the
> second query: where p.part_dt=DATE'2013-01-01'
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