COVAR_POP (Lakehouse v1)

COVAR_POP returns the population covariance of a set of number pairs.

Analyze Syntax

func.covar_pop(<expr1>, <expr2>)

Analyze Examples

func.covar_pop(table.units_sold, table.revenue).alias('covar_pop_units_revenue')

| covar_pop_units_revenue |
|-------------------------|
|        20000.0          |

SQL Syntax

COVAR_POP(<expr1>, <expr2>)

Arguments

Arguments	Description
<expr1>	Any numerical expression
<expr2>	Any numerical expression

Return Type

float64

SQL Examples

Create a Table and Insert Sample Data

CREATE TABLE product_sales (
  id INT,
  product_id INT,
  units_sold INT,
  revenue FLOAT
);

INSERT INTO product_sales (id, product_id, units_sold, revenue)
VALUES (1, 1, 10, 1000),
       (2, 2, 20, 2000),
       (3, 3, 30, 3000),
       (4, 4, 40, 4000),
       (5, 5, 50, 5000);

Query Demo: Calculate Population Covariance between Units Sold and Revenue

SELECT COVAR_POP(units_sold, revenue) AS covar_pop_units_revenue
FROM product_sales;

Result

| covar_pop_units_revenue |
|-------------------------|
|        20000.0          |