REGR_SLOPE
Returns the slope of the regression line, determined by a set of expression pairs. The return value is of type DOUBLE PRECISION
. REGR_SLOPE
eliminates expression pairs where either expression in the pair is NULL
. If no rows remain, REGR_SLOPE
returns NULL
.
Syntax
SELECT REGR_SLOPE ( expression1, expression2 )
Parameters
expression1 |
The dependent DOUBLE PRECISION expression
|
expression2 |
The independent DOUBLE PRECISION expression
|
Example
=> SELECT REGR_SLOPE (Annual_salary, Employee_age) FROM employee_dimension; REGR_SLOPE ------------------ -40.056400303749 (1 row)