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https://issues.apache.org/jira/browse/KYLIN-2406?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kaige Liu updated KYLIN-2406:
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Attachment: KYLIN-2406-fix-NPE.patch
For now this patch only prevent the NPE and give an error hint. A better
solution will be given in KYLIN-2427 later.
> TPC-H query 20, can triggers NPE
> --------------------------------
>
> Key: KYLIN-2406
> URL: https://issues.apache.org/jira/browse/KYLIN-2406
> Project: Kylin
> Issue Type: Bug
> Reporter: liyang
> Assignee: Kaige Liu
> Attachments: KYLIN-2406-fix-NPE.patch
>
>
> Below query triggers NPE
> {code}
> with tmp3 as (
> select l_partkey, 0.5 * sum(l_quantity) as sum_quantity, l_suppkey
> from v_lineitem
> inner join supplier on l_suppkey = s_suppkey
> inner join nation on s_nationkey = n_nationkey
> inner join part on l_partkey = p_partkey
> where l_shipdate >= '1992-01-01' and l_shipdate <= '1995-01-01'
> and n_name = 'CANADA'
> and p_name like 'forest%'
> group by l_partkey, l_suppkey
> )
> select
> s_name,
> s_address
> from
> v_partsupp
> inner join tmp3 on ps_partkey = l_partkey and ps_suppkey = l_suppkey
> inner join supplier on ps_suppkey = s_suppkey
> where
> ps_availqty > sum_quantity
> group by
> s_name, s_address
> order by
> s_name
> {code}
> While below query is OK. Only difference being the order of "inner join tmp3"
> and "inner join supplier"
> {code}
> with tmp3 as (
> select l_partkey, 0.5 * sum(l_quantity) as sum_quantity, l_suppkey
> from v_lineitem
> inner join supplier on l_suppkey = s_suppkey
> inner join nation on s_nationkey = n_nationkey
> inner join part on l_partkey = p_partkey
> where l_shipdate >= '1992-01-01' and l_shipdate <= '1995-01-01'
> and n_name = 'CANADA'
> and p_name like 'forest%'
> group by l_partkey, l_suppkey
> )
> select
> s_name,
> s_address
> from
> v_partsupp
> inner join supplier on ps_suppkey = s_suppkey
> inner join tmp3 on ps_partkey = l_partkey and ps_suppkey = l_suppkey
> where
> ps_availqty > sum_quantity
> group by
> s_name, s_address
> order by
> s_name
> {code}
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