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https://issues.apache.org/jira/browse/DRILL-2103?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14511926#comment-14511926
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Abhishek Girish commented on DRILL-2103:
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Testcase: Functional/Passing/tpcds/bugs/DRILL-2103.sql
> Queries on views containing average on columns containing null values fail
> --------------------------------------------------------------------------
>
> Key: DRILL-2103
> URL: https://issues.apache.org/jira/browse/DRILL-2103
> Project: Apache Drill
> Issue Type: Bug
> Components: Query Planning & Optimization
> Reporter: Abhishek Girish
> Assignee: Abhishek Girish
> Priority: Critical
> Fix For: 0.9.0
>
> Attachments: Create_views_store_sales.txt, agg_nulls.log
>
>
> > describe store_sales;
> ...
> | ss_item_sk | INTEGER | NO |
> ...
> | ss_sales_price | DOUBLE | NO |
> ...
> > select count(*) from store_sales where ss_sales_price is NULL;
> 129666
> > select count(*) from store_sales where ss_sales_price is NOT NULL;
> 2750738
> > select avg(ss_item_sk) from store_sales;
> Query failed: Query failed: Unexpected exception during fragment
> initialization: Internal error: Error while applying rule
> DrillReduceAggregatesRule, args
> [rel#852769:AggregateRel.NONE.ANY([]).[](child=rel#852768:Subset#3.NONE.ANY([]).[],group={},EXPR$0=AVG($0))]
> Error: exception while executing query: Failure while executing query.
> (state=,code=0)
> > select avg(ss_sales_price) from store_sales;
> Query failed: Query failed: Unexpected exception during fragment
> initialization: Internal error: Error while applying rule
> DrillReduceAggregatesRule, args
> [rel#851712:AggregateRel.NONE.ANY([]).[](child=rel#851711:Subset#3.NONE.ANY([]).[],group={},EXPR$0=AVG($0))]
> Error: exception while executing query: Failure while executing query.
> (state=,code=0)
> Log attached.
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