Steve Carlin created IMPALA-13562:
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Summary: More test cases are needed for ntile, cume_dist, and
percent_rank functions
Key: IMPALA-13562
URL: https://issues.apache.org/jira/browse/IMPALA-13562
Project: IMPALA
Issue Type: Improvement
Reporter: Steve Carlin
The cume_dist, ntile, and percent_rank functions have special code which
rewrites the function and breaks it into various parts.
One of the steps involves changing the "order by" key in the analytic
expression.
We do have one current test that has an order by clause in exprs.test.
For IMPALA-13481, I am adding a second test which tests an "order by desc"
clause.
However, there are a couple of order by cases that should also be tested
including when there are multiple columns in the order by clause and when the
null direction is changed.
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