lab1monday

lab1mon/lab1ex2.sql

 
-CREATE OR REPLACE FUNCTION add_population() RETURNS <ENTER> AS 
+CREATE OR REPLACE FUNCTION max_population() RETURNS <ENTER> AS 
 
 $$
 
 DECLARE
    popul <ENTER>;
-   total <ENTER>;
+   maxpop <ENTER>;
    c_pop CURSOR FOR <ENTER>;
 
 BEGIN
- total = 0;
+ maxpop = 0;
  OPEN c_pop;
   LOOP 
   FETCH c_pop INTO popul;
     EXIT WHEN NOT FOUND; 
-  total = total + popul;
+  maxpop = GREATEST(maxpop,popul);
   END LOOP; 
  CLOSE c_pop; 
- RETURN total;
+ RETURN maxpop;
 END;
 $$