REGR_AVGY
Returns the DOUBLE PRECISION average of the dependent expression in an expression pair.
	Returns the DOUBLE PRECISION average of the dependent expression in an expression pair. The function eliminates expression pairs where either expression in the pair is NULL. If no rows remain, the function returns NULL.
Syntax
REGR_AVGY ( expression1, expression2 )
Parameters
- expression1
- The dependent DOUBLE PRECISIONexpression
- expression2
- The independent DOUBLE PRECISIONexpression
Examples
=> SELECT REGR_AVGY (Annual_salary, Employee_age)
      FROM employee_dimension;
 REGR_AVGY
------------
 58354.4913
(1 row)