Definition:
In Oracle, REGR_SLOPE is a linear regression analytic function which is used to measure the slope of a line. Its computation formula looks like this:
COVAR_POP(x,y) / VAR_POP(y)
It accepts two numeric inputs. Note that the pairs having any argument's value as NULL are eliminated, but the final result might be NULL as per the above computation.
Example Syntax:
REGR_R2(x,y)
In the syntax, 'x' is referred to as the dependent variable and 'y' is referred to as the independent variable of the Regression Line.
Example Usage:
The SQL query below uses REGR_SLOPE to measure the slope of line formed by the columns DEPTNO and SAL.
SELECT deptno, sal, REGR_SLOPE(deptno, sal) OVER (partition by deptno) "REGR_SLOPE"
FROM employee
Related Links:
Related Code Snippets:
- REGR_SLOPE - REGR_SLOPE returns the slope of the line. After the elimination of null (expr1, expr2...
