LakeShen commented on code in PR #3316:
URL: https://github.com/apache/calcite/pull/3316#discussion_r1266972865


##########
core/src/test/java/org/apache/calcite/rex/RexProgramTest.java:
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@@ -801,6 +804,17 @@ private void checkExponentialCnf(int n) {
                         and(eRef,
                             or(fRef,
                                and(gRef, or(trueLiteral, falseLiteral)))))))));
+

Review Comment:
   > We should find a way to prevent regressions on this, and bake them into a 
test that can run within Calcite, we cannot rely too much on such manual checks 
as people come and go, while Calcite tests stay.
   > 
   > I wonder then what's the extra part you added to the test is actually 
checking if not predicate order.
   
   Hi @asolimando ,the single test I added is the case shown in my picture 
above,I improved the content of the single test I added.



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