ARRAY_KURTOSIS

返回数组中数值的超峰度（excess kurtosis）。NULL 元素会被忽略，若存在非数值类型则报错。

语法

ARRAY_KURTOSIS(<array>)

返回类型

浮点型。

示例

SELECT ARRAY_KURTOSIS([1, 2, 3, 4]) AS kurt;

+------------------+
| kurt             |
+------------------+
| -1.200000000000001 |
+------------------+

SELECT ARRAY_KURTOSIS([NULL, 2, 3, 4]) AS kurt_null;

+-----------+
| kurt_null |
+-----------+
| 0         |
+-----------+