COVAR_SAMP
Description
Syntax
double covar_samp(x, y)
计算x和y的样本协方差。
example
mysql> select covar_samp(x,y) from baseall;
+---------------------+
| covar_samp(x, y) |
+---------------------+
| 0.89442719099991586 |
+---------------------+
1 row in set (0.21 sec)
keywords
COVAR_SAMP