[jira] [Created] (KYLIN-2313) Cannot find a cube in a subquery case with count distinct

["Dong Li (JIRA)" <ji...@apache.org>]

Dong Li created KYLIN-2313:
------------------------------

             Summary: 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


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='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]].



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