larry98 commented on code in PR #43256:
URL: https://github.com/apache/arrow/pull/43256#discussion_r1722187956
##########
cpp/src/arrow/compute/expression_test.cc:
##########
@@ -1616,6 +1616,70 @@ TEST(Expression,
SimplifyWithComparisonAndNullableCaveat) {
true_unless_null(field_ref("i32")))); // not satisfiable, will drop
row group
}
+TEST(Expression, SimplifyIsIn) {
+ auto is_in = [](Expression field, std::shared_ptr<DataType> value_set_type,
+ std::string json_array) {
+ SetLookupOptions options{ArrayFromJSON(value_set_type, json_array),
+ SetLookupOptions::MATCH};
+ return call("is_in", {field}, options);
+ };
+
+ Simplify{is_in(field_ref("i32"), int32(), "[]")}
+ .WithGuarantee(greater(field_ref("i32"), literal(2)))
+ .Expect(false);
+
+ Simplify{is_in(field_ref("i32"), int32(), "[null]")}
+ .WithGuarantee(greater(field_ref("i32"), literal(2)))
+ .Expect(false);
Review Comment:
Not sure if I follow, the guarantee `i32 > 2` itself guarantees that `i32`
is non-null.
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