PL/SQL Not Exists Query - sql

Question

I need help to solve this issue. The Driver_ID exists in two tables, Driver and Driver_Deliveries. I need it to display the First_Name, Surname & Driver_ID for the Driver ID's that do not appear in the Driver_Deliveries table. I'm using Oracle SQL Developer with Oracle 11G.
DECLARE
FIRSTNAME VARCHAR2(20);
SUR_NAME VARCHAR2(20);
DRIVERID VARCHAR2(5);
BEGIN
FOR i IN
(
SELECT
FIRST_NAME,
SURNAME,
a.DRIVER_ID
INTO
FIRSTNAME, SUR_NAME, DRIVERID
FROM
DRIVER_DELIVERIES,
DRIVER a,
WHERE NOT EXISTS(SELECT * FROM DRIVER_DELIVERIES WHERE DRIVER_DELIVERIES.DRIVER_ID = a.DRIVER_ID);
)
LOOP
DBMS_OUTPUT.PUT_LINE('FIRST NAME :' ||I.FIRST_NAME);
DBMS_OUTPUT.PUT_LINE('SURNAME :' || I.SURNAME);
DBMS_OUTPUT.PUT_LINE('DELIVERY JOB REQUIRED: YES ');
END LOOP;
END;
Here's the error stack:
Error report -
ORA-06550: line 23, column 9:
PL/SQL: ORA-00903: invalid table name
ORA-06550: line 10, column 5:
PL/SQL: SQL Statement ignored
ORA-06550: line 23, column 106:
PLS-00103: Encountered the symbol ";" when expecting one of the following:
loop
06550. 00000 - "line %s, column %s:\n%s"
*Cause: Usually a PL/SQL compilation error.
*Action:

Answer 1

You need to select into something with a simple query in a PL/SQL block, but you've taken that rule too far; because your cursor loop variable i is an implicit record type that is already available to take the query results.
You also have an extra comma in your cursor query's select list, and the from clause. And an extra semicolon after the where clause.
So with that loop syntax you need:
...
FOR i IN
(
SELECT
FIRST_NAME,
SURNAME,
a.DRIVER_ID
FROM
DRIVER_DELIVERIES,
DRIVER a
WHERE
...
Though you should really use explicit join syntax, which would make it more obvious that you currently have no link between the two tables in your where clause. But you don't actually want to refer to driver_deliveries there at all - you're getting all the data from the driver table. You only need to refer to that within the exists clause. (And I've just noticed you've spelled the table name incorrectly in that clause too).
So modifying that further:
need:
...
FOR i IN
(
SELECT
FIRST_NAME,
SURNAME,
DRIVER_ID
FROM
DRIVER a
WHERE NOT EXISTS(
SELECT null FROM DRIVER_DELIVERIES
WHERE DRIVER_DELIVERIES.DRIVER_ID = a.DRIVER_ID)
)
LOOP
...
You don't appear to need PL/SQL for this, but if you have to...