vlsi commented on a change in pull request #2282:
URL: https://github.com/apache/calcite/pull/2282#discussion_r659086697
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File path: core/src/test/java/org/apache/calcite/rex/RexProgramTest.java
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@@ -3224,4 +3224,25 @@ private SqlSpecialOperatorWithPolicy(String name,
SqlKind kind, int prec, boolea
@Test void testSimplifyVarbinary() {
checkSimplifyUnchanged(cast(cast(vInt(), tVarchar(true, 100)),
tVarbinary(true)));
}
+
+ @Test void testSimplifySimpleArithmetic() {
+ RexNode a = vIntNotNull(1);
+ RexNode zero = literal(0);
+ RexNode one = literal(1);
+
+ RexNode b = vDecimalNotNull(2);
+ RexNode half = literal(new BigDecimal(0.5), b.getType());
+
+ checkSimplify(add(a, zero), "?0.notNullInt1");
Review comment:
Could you please add a test like `add(zero, sub(vInt(0), vInt(0)))`?
The expression should evaluate to null in case `vInt(0)` is null.
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