Bingandbing commented on code in PR #18747:
URL: https://github.com/apache/doris/pull/18747#discussion_r1178842263


##########
fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/logical/LogicalBinary.java:
##########
@@ -43,4 +46,16 @@ public LogicalBinary(PlanType type, 
Optional<GroupExpression> groupExpression,
     }
 
     public abstract List<Slot> computeOutput();
+
+    @Override
+    public JSONObject toJson() {
+        JSONObject json = new JSONObject();
+        json.put("PlanType", getType().toString());
+        JSONArray childrenJson = new JSONArray();
+        for (Plan child : children) {
+            childrenJson.put(child.toJson());
+        }
+        json.put("children", childrenJson);
+        return json;
+    }

Review Comment:
   I considered this implementation, but found leafPlan do not have children 
member, so this can not be done



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