diff --git a/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/QueryMethods.java b/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/QueryMethods.java
index 7d4e3d97..17a2ca64 100644
--- a/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/QueryMethods.java
+++ b/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/QueryMethods.java
@@ -2387,6 +2387,13 @@ public class QueryMethods {
 
     // === 构建 column 列 ===
 
+    /**
+     * 构建 NULL 常量。
+     */
+    public static QueryColumn null_() {
+        return new StringQueryColumn("NULL");
+    }
+
     /**
      * 构建数字常量。
      */