Applies to: Databricks SQL Databricks Runtime 11.2 and above
Returns the intercept of the univariate linear regression line in a group where
yExpr are NOT NULL.
regr_intercept( [ALL | DISTINCT] yExpr, xExpr) [FILTER ( WHERE cond ) ]
This function can also be invoked as a window function using the
yExpr: A numeric expression, the dependent variable.
xExpr: A numeric expression, the independent variable.
cond: An optional boolean expression filtering the rows used for the function.
Any nulls within the group are ignored. If a group is empty or consists only of nulls, the result is NULL.
DISTINCT is specified, the average is computed after duplicates are removed.
Thi function is a synonym for
avg(y) - regr_slope(y,x) * avg(x).