---

{ “title”: “COVAR,COVAR_POP”, “language”: “en”, “description”: “Calculate the covariance between two numeric variables.” }

Description

Calculate the covariance between two numeric variables.

Alias

• COVAR_POP

Syntax

COVAR(<expr1>, <expr2>)

Parameters

Parameter	Description
<expr1>	Numeric expression or column
<expr2>	Numeric expression or column

Return Value

Returns the covariance value of expr1 and expr2, special case:

• If a column of expr1 or expr2 is NULL, the row data will not be counted in the final result.

Example

select covar(x,y) from baseall;

+---------------------+
| covar(x, y)          |
+---------------------+
| 0.89442719099991586 |
+---------------------+