[teiid-issues] [JBoss JIRA] (TEIID-2804) Aggregate empty filter too broad and may inappropriately filter results
Steven Hawkins (JIRA)
issues at jboss.org
Tue Jan 14 11:21:32 EST 2014
Steven Hawkins created TEIID-2804:
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Summary: Aggregate empty filter too broad and may inappropriately filter results
Key: TEIID-2804
URL: https://issues.jboss.org/browse/TEIID-2804
Project: Teiid
Issue Type: Bug
Components: Query Engine
Affects Versions: 8.3
Reporter: Steven Hawkins
Assignee: Steven Hawkins
Priority: Critical
Fix For: 8.7
This is a regression from TEIID-2253 which consolidated logic in RulePushAggregates to handle multi-source planning. It also inappropriately expanded an empty test (which should only be applied to grouping without a group by) to some cases with group by clauses and in an attempt to broaden pushdown support utilized is not null tests. However the is not null tests are not generally valid as the aggregate could be computed against all null values for example. Depending upon this situations this could result in invalid filtering of results.
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