Fix wrong description (pingcap#4539)

jacktd9 · Sep 18, 2020 · af25b22 · af25b22
1 parent 0a0d5c2
commit af25b22
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/functions-and-operators/aggregate-group-by-functions.md b/functions-and-operators/aggregate-group-by-functions.md
@@ -22,8 +22,8 @@ TiDB 支持的 MySQL GROUP BY 聚合函数如下所示：
 | [`GROUP_CONCAT()`](https://dev.mysql.com/doc/refman/5.7/en/group-by-functions.html#function_group-concat)     | 返回连接的字符串  |
 | [`VARIANCE()`，`VAR_POP()`](https://dev.mysql.com/doc/refman/5.7/en/group-by-functions.html#function_var-pop) | 返回总体标准方差 |
 | [`STD()`，`STDDEV()`，`STDDEV_POP`](https://dev.mysql.com/doc/refman/5.7/en/aggregate-functions.html#function_std) | 返回总体标准差 |
-| [`VAR_SAMP()`](https://dev.mysql.com/doc/refman/5.7/en/aggregate-functions.html#function_var-samp) | 返回采样标准方差 |
-| [`STDDEV_SAMP()`](https://dev.mysql.com/doc/refman/5.7/en/aggregate-functions.html#function_stddev-samp) | 返回采样标准差 |
+| [`VAR_SAMP()`](https://dev.mysql.com/doc/refman/5.7/en/aggregate-functions.html#function_var-samp) | 返回采样方差 |
+| [`STDDEV_SAMP()`](https://dev.mysql.com/doc/refman/5.7/en/aggregate-functions.html#function_stddev-samp) | 返回采样标准方差 |
 | [`JSON_OBJECTAGG(key, value)`](https://dev.mysql.com/doc/refman/5.7/en/group-by-functions.html#function_json-objectagg) | 将结果集返回为单个含 (key, value) 键值对的 JSON object |
 
 > **注意：**