diff --git a/docs/nightly/en/reference/sql/functions/overview.md b/docs/nightly/en/reference/sql/functions/overview.md
index 7fb4cc20a..b8561b8e2 100644
--- a/docs/nightly/en/reference/sql/functions/overview.md
+++ b/docs/nightly/en/reference/sql/functions/overview.md
@@ -15,9 +15,6 @@ functions in DataFusion. These functions include:
 
 To find all the DataFusion functions, please refer to [DataFusion Functions](./df-functions).
 
-In summary, GreptimeDB supports all SQL aggregate functions, scalar functions, and window functions in DataFusion. Users can safely
-use these rich built-in functions in GreptimeDB to manipulate and analyze data.
-
 ### `arrow_cast`
 
 `arrow_cast` function is from DataFusion's [`arrow_cast`](./df-functions#arrow-cast). It's illustrated as:
diff --git a/docs/nightly/zh/reference/sql/functions/overview.md b/docs/nightly/zh/reference/sql/functions/overview.md
index f920bfe6b..9b05ac2f4 100644
--- a/docs/nightly/zh/reference/sql/functions/overview.md
+++ b/docs/nightly/zh/reference/sql/functions/overview.md
@@ -12,9 +12,7 @@ The outling of this document is a little strange, as the content is classified b
 * **标量函数**: 如 `ABS`、`COS`、`FLOOR` 等。详细列表请参阅 [标量函数](./df-functions#scalar-functions)
 * **窗口函数**: 对相关的一组行记录执行计算。详细列表请参阅 [窗口函数](./df-functions#window-functions)
 
-要查找所有 DataFusion 函数，请参阅 [DataFusion 函数](./df-functions)。
-
-总之，GreptimeDB 支持 DataFusion 中的所有 SQL 聚合函数、标量函数和窗口函数。用户可以安全地在 GreptimeDB 中使用这些丰富的内置函数来处理和分析数据。
+要查看所有 DataFusion 函数，请参阅 [DataFusion 函数](./df-functions)。
 
 ### `arrow_cast`