HappenLee commented on code in PR #53084:
URL: https://github.com/apache/doris/pull/53084#discussion_r2203429012
##########
fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/ConcatWs.java:
##########
@@ -42,7 +42,10 @@ public class ConcatWs extends ScalarFunction
.args(VarcharType.SYSTEM_DEFAULT,
ArrayType.of(VarcharType.SYSTEM_DEFAULT)),
FunctionSignature.ret(VarcharType.SYSTEM_DEFAULT)
.varArgs(VarcharType.SYSTEM_DEFAULT,
VarcharType.SYSTEM_DEFAULT),
-
FunctionSignature.ret(StringType.INSTANCE).varArgs(StringType.INSTANCE,
StringType.INSTANCE)
+
FunctionSignature.ret(StringType.INSTANCE).varArgs(StringType.INSTANCE,
StringType.INSTANCE),
+ // 新增签名：第一个参数为字符串，后续为一个或多个字符串数组
Review Comment:
use english
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