From c7d86c062ad39edf16c5ed251e098ba925f00bd9 Mon Sep 17 00:00:00 2001
From: zzwwhh <30350667+iwanttobepowerful@users.noreply.github.com>
Date: Wed, 6 Mar 2024 20:37:48 +0800
Subject: [PATCH] [fix](Nereids) json_object can't be odd parameters, need even
 parameters (#31767)

---
 .../nereids/trees/expressions/functions/scalar/JsonObject.java | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/JsonObject.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/JsonObject.java
index e1e2c961ef..6d3d1536eb 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/JsonObject.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/JsonObject.java
@@ -49,6 +49,9 @@ public class JsonObject extends ScalarFunction
 
     @Override
     public void checkLegalityBeforeTypeCoercion() {
+        if ((arity() & 1) == 1) {
+            throw new AnalysisException("json_object can't be odd parameters, need even parameters: " + this.toSql());
+        }
         for (int i = 0; i < arity(); i++) {
             if ((i & 1) == 0 && getArgumentType(i).isNullType()) {
                 throw new AnalysisException("json_object key can't be NULL: " + this.toSql());