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Posted to issues@drill.apache.org by "Rahul Challapalli (JIRA)" <ji...@apache.org> on 2015/01/16 02:04:00 UTC
[jira] [Commented] (DRILL-2019) Filter pushdown into the subquery
when the subquery also has a filter is resulting in incorrect results
[ https://issues.apache.org/jira/browse/DRILL-2019?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14279624#comment-14279624 ]
Rahul Challapalli commented on DRILL-2019:
------------------------------------------
The plan for the above query :
{code}
| 00-00 Screen
00-01 StreamAgg(group=[{}], EXPR$0=[COUNT()])
00-02 Project($f0=[0])
00-03 HashJoin(condition=[=($0, $1)], joinType=[inner])
00-05 Scan(groupscan=[ParquetGroupScan [entries=[ReadEntryWithPath [path=/tpch/lineitem.parquet]], selectionRoot=/tpch/lineitem.parquet, numFiles=1, columns=[`l_orderkey`]]])
00-04 Project(o_orderkey=[$1])
00-06 SelectionVectorRemover
00-07 Filter(condition=[>($0, 5)])
00-08 Filter(condition=[<($0, 5)])
00-09 Project(o_custkey=[$1], o_orderkey=[$0])
00-10 Scan(groupscan=[ParquetGroupScan [entries=[ReadEntryWithPath [path=/tpch/orders.parquet]], selectionRoot=/tpch/orders.parquet, numFiles=1, columns=[`o_custkey`, `o_orderkey`]]])
|
{code}
> Filter pushdown into the subquery when the subquery also has a filter is resulting in incorrect results
> -------------------------------------------------------------------------------------------------------
>
> Key: DRILL-2019
> URL: https://issues.apache.org/jira/browse/DRILL-2019
> Project: Apache Drill
> Issue Type: Bug
> Components: Execution - Operators, Query Planning & Optimization
> Reporter: Rahul Challapalli
> Assignee: Aman Sinha
> Priority: Critical
>
> git.commit.id.abbrev=b491cdb
> The below query on top of tpch 0.01 data should actually return 0 records. (Verified with postgres). However drill returns incorrect result
> {code}
> select count(*) from cp.`tpch/lineitem.parquet` l inner join (select o.o_orderkey, o.o_custkey from cp.`tpch/orders.parquet` o where o.o_custkey < 5) s on l.l_orderkey = s.o_orderkey and s.o_custkey > 5;
> +------------+
> | EXPR$0 |
> +------------+
> | 189 |
> +------------+
> {code}
> Marked as 'critical' since drill is reporting incorrect results
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