diff --git a/docs/en/extending-doris/hive-of-doris.md b/docs/en/extending-doris/hive-of-doris.md
index ed730dca22..3d1ccac214 100644
--- a/docs/en/extending-doris/hive-of-doris.md
+++ b/docs/en/extending-doris/hive-of-doris.md
@@ -88,7 +88,7 @@ PROPERTIES (
 
 The supported Hive column types correspond to Doris in the following table.
 
-|  Hive  | Doris  |             描述              |
+|  Hive  | Doris  |             Description              |
 | :------: | :----: | :-------------------------------: |
 |   BOOLEAN  | BOOLEAN  |                         |
 |   CHAR   |  CHAR  |    Only UTF8 encoding is supported      |
@@ -101,7 +101,7 @@ The supported Hive column types correspond to Doris in the following table.
 |   DOUBLE  | DOUBLE |  |
 |   DECIMAL  | DECIMAL |  |
 |   DATE   |  DATE  |                                   |
-|   DATETIME  | TIMESTAMP | Timestamp to Datetime will lose precision | 
+|   TIMESTAMP  | DATETIME | Timestamp to Datetime will lose precision |
 
 **Note:** 
 - Hive table Schema changes **are not automatically synchronized** and require rebuilding the Hive external table in Doris.
diff --git a/docs/en/sql-reference/sql-statements/Data Definition/create-function.md b/docs/en/sql-reference/sql-statements/Data Definition/create-function.md
index 417678c2fd..fdd08ed2d1 100644
--- a/docs/en/sql-reference/sql-statements/Data Definition/create-function.md	
+++ b/docs/en/sql-reference/sql-statements/Data Definition/create-function.md	
@@ -135,8 +135,8 @@ If the `function_name` contains the database name, the custom function will be c
         AS CONCAT(LEFT(id, 3), '****', RIGHT(id, 4));
 
     -- create a custom cast alias function
-    CREATE ALIAS FUNCTION decimal(ALL, INT, INT) WITH PARAMETER(col, precision, scale) 
-        AS CAST(col AS decimal(precision, scale));
+    CREATE ALIAS FUNCTION string(ALL, INT) WITH PARAMETER(col, length) 
+        AS CAST(col AS varchar(length));
     ```
 
 ## keyword
diff --git a/docs/zh-CN/extending-doris/hive-of-doris.md b/docs/zh-CN/extending-doris/hive-of-doris.md
index 759e689595..545b8100a4 100644
--- a/docs/zh-CN/extending-doris/hive-of-doris.md
+++ b/docs/zh-CN/extending-doris/hive-of-doris.md
@@ -101,7 +101,7 @@ PROPERTIES (
 |   DOUBLE  | DOUBLE |  |
 |   DECIMAL  | DECIMAL |  |
 |   DATE   |  DATE  |                                   |
-|   DATETIME  | TIMESTAMP | Timestamp 转成 Datetime 会损失精度 | 
+|   TIMESTAMP  | DATETIME | Timestamp 转成 Datetime 会损失精度 |
 
 **注意：** 
 - Hive 表 Schema 变更**不会自动同步**，需要在 Doris 中重建 Hive 外表。
diff --git a/docs/zh-CN/sql-reference/sql-statements/Data Definition/create-function.md b/docs/zh-CN/sql-reference/sql-statements/Data Definition/create-function.md
index cf6a4fe04c..98d9ce0593 100644
--- a/docs/zh-CN/sql-reference/sql-statements/Data Definition/create-function.md	
+++ b/docs/zh-CN/sql-reference/sql-statements/Data Definition/create-function.md	
@@ -136,8 +136,8 @@ CREATE [AGGREGATE] [ALIAS] FUNCTION function_name
         AS CONCAT(LEFT(id, 3), '****', RIGHT(id, 4));
     
     -- 创建自定义 CAST 别名函数
-    CREATE ALIAS FUNCTION decimal(ALL, INT, INT) WITH PARAMETER(col, precision, scale) 
-        AS CAST(col AS decimal(precision, scale));
+    CREATE ALIAS FUNCTION string(ALL, INT) WITH PARAMETER(col, length) 
+        AS CAST(col AS varchar(length));
     ```
 
 ## keyword