Julian Hyde created CALCITE-2332:
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Summary: It's wrong to simplify FLOOR(CEIL(x)) to FLOOR(x)
Key: CALCITE-2332
URL: https://issues.apache.org/jira/browse/CALCITE-2332
Project: Calcite
Issue Type: Bug
Reporter: Julian Hyde
Assignee: Julian Hyde
It's wrong to simplify {{FLOOR(CEIL(x))}} to {{FLOOR(x)}}.
Specifically, it is not valid to simplify {{FLOOR(CEIL(x TO YEAR) TO YEAR)}} to
{{FLOOR(x TO YEAR)}} when {{x}} is {{TIMESTAMP '2010-10-10 00:00:00'}}. I
believe the correct simplification is {{CEIL(x TO YEAR)}}.
I have disabled {{RexImplicationCheckerTest.testSimplifyFloor}} due to this
issue. Please re-enable it.
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