kurtosis
kurtosis 介绍
kurtosis(expr) - 根据一组值计算并返回峰态值。
Examples:
> SELECT kurtosis(col) FROM VALUES (-10), (-20), (100), (1000) AS tab(col);
-0.7014368047529627
> SELECT kurtosis(col) FROM VALUES (1), (10), (100), (10), (1) as tab(col);
0.19432323191699075Since: 1.6.0