morningman commented on code in PR #13858:
URL: https://github.com/apache/doris/pull/13858#discussion_r1011142098


##########
fe/fe-core/src/main/java/org/apache/doris/analysis/NullLiteral.java:
##########
@@ -101,6 +101,11 @@ public String getStringValue() {
         return "NULL";
     }
 
+    @Override
+    public String getStringValueForArray() {
+        return "null";

Review Comment:
   the null value inside an array is represented as "null", for exampe:
   `[null, null]`.
   Not same as other primitive type to represent as `\N`.
   I will add some comment to this method.



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