NobiGo commented on a change in pull request #2598:
URL: https://github.com/apache/calcite/pull/2598#discussion_r743341588
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File path: core/src/test/resources/sql/functions.iq
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@@ -179,5 +179,15 @@ SELECT EXISTSNODE(
!ok
+# [CALCITE-4875] Preserve Operand Nullability in NVL rewrite
+# Asserting that NVL does not change a Nullable operand to NOT Nullable
+
+!use oraclefunc
+select nvl("name", 'undefined') FROM "hr"."emps";
+
+EnumerableCalc(expr#0..4=[{inputs}], expr#5=[IS NOT NULL($t2)],
expr#6=[CAST($t2):VARCHAR], expr#7=['undefined':VARCHAR], expr#8=[CASE($t5,
$t6, $t7)], EXPR$0=[$t8])
+ EnumerableTableScan(table=[[hr, emps]])
+!plan
Review comment:
Can you add extra ` !ok` command to test the output? Others is good for
me.
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