vlsi commented on a change in pull request #1848: [CALCITE-3845] CASE WHEN
expression with nullability CAST is considered as reduced wrongly in
ReduceExpressionsRule
URL: https://github.com/apache/calcite/pull/1848#discussion_r389708007
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File path:
core/src/main/java/org/apache/calcite/rel/rules/ReduceExpressionsRule.java
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@@ -302,6 +302,7 @@ public ProjectReduceExpressionsRule(Class<? extends
Project> projectClass,
Lists.newArrayList(project.getProjects());
if (reduceExpressions(project, expList, predicates, false,
matchNullability)) {
+ assert !project.getProjects().equals(expList);
Review comment:
Can you please add a message, so the failure looks human-readable?
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