REGR_AVGX
Returns the DOUBLE PRECISION average of the independent expression in an expression pair.
	Returns the DOUBLE PRECISION average of the independent expression in an expression pair. REGR_AVGX eliminates expression pairs where either expression in the pair is NULL. If no rows remain, REGR_AVGX returns NULL.
Syntax
SELECT REGR_AVGX ( expression1, expression2 )
Parameters
- expression1
- The dependent DOUBLE PRECISIONexpression
- expression2
- The independent DOUBLE PRECISIONexpression
Examples
=> SELECT REGR_AVGX (Annual_salary, Employee_age)
      FROM employee_dimension;
 REGR_AVGX
-----------
    39.321
(1 row)