skewness
skewness 介绍
skewness(expr) - 返回根据一个组中的值计算出的偏度值。
Examples:
> SELECT skewness(col) FROM VALUES (-10), (-20), (100), (1000) AS tab(col);
1.1135657469022011
> SELECT skewness(col) FROM VALUES (-1000), (-100), (10), (20) AS tab(col);
-1.1135657469022011Since: 1.6.0