Update DBMS/SQL/Week6/writeup.md

DBMS/SQL/Week6/writeup.md

@@ -72,5 +72,32 @@ Report Number: 1, Date: 01-JAN-24, Location: Delhi India
 PL/SQL procedure successfully completed.
 ```
 
+### 4. Create a procedure to identify all drivers who have never been involved in any accidents. The procedure should return their driver-id, name, and address.
 
+```SQL
+SQL> CREATE OR REPLACE PROCEDURE GetDriversWithoutAccidents AS
+  2  BEGIN
+  3      FOR rec IN (
+  4          SELECT p.DRIVER_ID#, p.NAME, p.ADDRESS
+  5          FROM person p
+  6          LEFT JOIN participated pa ON p.DRIVER_ID# = pa.DRIVER_ID#
+  7          WHERE pa.REPORT_NUMBER IS NULL
+  8      ) LOOP
+  9          DBMS_OUTPUT.PUT_LINE('Driver ID: ' || rec.DRIVER_ID# ||
+
+ 10                               ', Name: ' || rec.NAME ||
+ 11                               ', Address: ' || rec.ADDRESS);
+ 12      END LOOP;
+ 13  END;
+ 14  /
+
+Procedure created.
+```
+```SQL
+SQL> EXEC GetDriversWithoutAccidents;
+Driver ID: 1237, Name: Saarthak, Address: Manipal India
+Driver ID: 1235, Name: Rohit, Address: Banglalore India
+
+PL/SQL procedure successfully completed.
+```