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https://issues.jboss.org/browse/TEIID-2146?page=com.atlassian.jira.plugin...
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RH Bugzilla Integration commented on TEIID-2146:
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jolee(a)redhat.com made a comment on [bug
848382|https://bugzilla.redhat.com/show_bug.cgi?id=848382]
Description of problem:
Please refer to TEIID-2146
Version-Release number of selected component (if applicable):
How reproducible:
Steps to Reproduce:
1.
2.
3.
Actual results:
Expected results:
Additional info:
Dependent join independent dup removal issue
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Key: TEIID-2146
URL:
https://issues.jboss.org/browse/TEIID-2146
Project: Teiid
Issue Type: Bug
Components: Query Engine
Affects Versions: 7.1
Reporter: Steven Hawkins
Assignee: Steven Hawkins
Priority: Blocker
Fix For: 8.1
If a dependent join uses columns from the independent side beyond the join predicates and
has unique values with duplicates for the predicate value from the independent side, then
the duplicate removal will fail to remove the duplicates, since it is mistakenly using all
columns.
If the duplicates then span multiple dependent queries, such as would be the case with
large dependent joins or when a source is used with limited value pushdown (such as
sybase), then the join result can be incorrect with duplicate rows.
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