Yurttas/PL/DBL/oracle/F/02/SPJ/get avg.sql

 1CREATE OR REPLACE
 2FUNCTION get_avg RETURN NUMBER AS
 3
 4  avg_qty NUMBER;
 5
 6BEGIN
 7
 8  SELECT AVG(quantity) AS qty
 9  INTO avg_qty
10  FROM Shipments
11  WHERE jn = 'J01';
12
13  RETURN(avg_qty);
14
15END;
16/