[teiid-issues] [JBoss JIRA] (TEIID-5477) Incorrect results with lead/lag over windows with duplicates

[Steven Hawkins (JIRA)]

Steven Hawkins created TEIID-5477:
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             Summary: Incorrect results with lead/lag over windows with duplicates
                 Key: TEIID-5477
                 URL: https://issues.jboss.org/browse/TEIID-5477
             Project: Teiid
          Issue Type: Bug
          Components: Query Engine
            Reporter: Steven Hawkins
            Assignee: Steven Hawkins
             Fix For: 11.2, 11.1.1, 11.0.3, 10.3.5


LEAD/LAG should be computed as row values functions, rather than over a range.

for example:

select e1, lead(e1, 2) over (order by e1 nulls last) from pm1.g1

returns three rows of ('a', 'a') - rather than the expected ('a', 'a'), ('a', 'b'), ('a', 'c')




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