suibianwanwank commented on code in PR #3911:
URL: https://github.com/apache/calcite/pull/3911#discussion_r1713001066
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testkit/src/main/java/org/apache/calcite/test/SqlOperatorTest.java:
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@@ -13519,6 +13519,52 @@ void testTimestampDiff(boolean coercionEnabled) {
f.checkNull("date_add(CAST(NULL AS DATE), interval 5 day)");
}
+ /** Test case for
+ * <a
href="https://issues.apache.org/jira/browse/CALCITE-6396";>[CALCITE-6396]
+ * Add ADD_MONTHS function (enabled in Oracle, Spark library)</a>.
+ */
+ @Test void testAddMonths() {
+ final SqlOperatorFixture f0 = fixture()
+ .setFor(SqlLibraryOperators.ADD_MONTHS);
+ f0.checkFails("^add_months(date '2008-12-25', "
+ + "5)^",
+ "No match found for function signature "
+ + "ADD_MONTHS\\(<DATE>, <NUMERIC>\\)", false);
+ final Consumer<SqlOperatorFixture> consumer = f -> {
+ f.checkScalar("add_months(date '2016-02-22', 2)",
+ "2016-04-22",
+ "DATE NOT NULL");
+ f.checkScalar("add_months(date '2016-02-22', -2)",
Review Comment:
I think it would be a good idea to include a timestamp type test? In spark,
you can use timestamp and return a date type
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