olivrlee commented on code in PR #3003:
URL: https://github.com/apache/calcite/pull/3003#discussion_r1067473329
##########
testkit/src/main/java/org/apache/calcite/test/SqlOperatorTest.java:
##########
@@ -6315,6 +6315,30 @@ void assertSubFunReturns(boolean binary, String s, int
start,
f12.checkNull("nvl(CAST(NULL AS VARCHAR(6)), cast(NULL AS VARCHAR(4)))");
}
+
+ @Test void testIfNullCoalesceFunc() {
+ final SqlOperatorFixture f = fixture()
+ .withLibrary(SqlLibrary.BIG_QUERY)
+ .setFor(SqlLibraryOperators.IFNULL, VM_EXPAND);
+
+ f.checkString("ifnull('a','b')", "a", "CHAR(1) NOT NULL");
+ f.checkString("ifnull(null,'b')", "b", "CHAR(1)");
Review Comment:
Updated to follow NVL pattern and the result is CHAR(1) NOT NULL, so fixed!
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