rubenada commented on code in PR #3258:
URL: https://github.com/apache/calcite/pull/3258#discussion_r1232054949
##########
testkit/src/main/java/org/apache/calcite/test/SqlOperatorTest.java:
##########
@@ -1959,6 +1960,24 @@ private static void checkConcatFunc(SqlOperatorFixture
f) {
f.checkFails("^concat()^", INVALID_ARGUMENTS_NUMBER, false);
}
+ /** Test case for
+ * <a
href="https://issues.apache.org/jira/browse/CALCITE-5771";>[CALCITE-5771]
+ * Apply two different NULL semantics for CONCAT function(enabled in MySQL、
Review Comment:
I think it would be better to use here the "regular comma": `,` instead of
`、`
The same applies for the similar messages in functions.iq, final commit
message, PR title and Jira title.
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