Oralce PL/SQL examples of recursion (#91)

03_recursion/plsql/03_factorial.sql

@@ -0,0 +1,22 @@
+SET SERVEROUTPUT ON
+DECLARE  
+   result NUMBER; 
+
+FUNCTION factorial(x NUMBER)  
+RETURN NUMBER  
+IS  
+   f NUMBER;
+   
+BEGIN  
+   IF x = 0  THEN  
+      f := 1;
+   ELSE  
+      f := x * factorial(x - 1);  
+   END IF;  
+RETURN f;  
+END;  
+   
+BEGIN  
+  result := factorial(5);  
+  dbms_output.put_line(result);
+END;