UPDATE v12

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The UPDATE command available in the SQL language can also be used in SPL programs.

An expression in the SPL language can be used wherever an expression is allowed in the SQL UPDATE command. Thus, SPL variables and parameters can be used to supply values to the update operation.

CREATE OR REPLACE PROCEDURE emp_comp_update (
    p_empno         IN emp.empno%TYPE,
    p_sal           IN emp.sal%TYPE,
    p_comm          IN emp.comm%TYPE
)
IS
BEGIN
    UPDATE emp SET sal = p_sal, comm = p_comm WHERE empno = p_empno;

    IF SQL%FOUND THEN
        DBMS_OUTPUT.PUT_LINE('Updated Employee # : ' || p_empno);
        DBMS_OUTPUT.PUT_LINE('New Salary         : ' || p_sal);
        DBMS_OUTPUT.PUT_LINE('New Commission     : ' || p_comm);
    ELSE
        DBMS_OUTPUT.PUT_LINE('Employee # ' || p_empno || ' not found');
    END IF;
END;

The SQL%FOUND conditional expression returns TRUE if a row is updated, FALSE otherwise. See Obtaining the Result Status for a discussion of SQL%FOUND and other similar expressions.

The following shows the update on the employee using this procedure.

EXEC emp_comp_update(9503, 6540, 1200);

Updated Employee # : 9503
New Salary         : 6540
New Commission     : 1200

SELECT * FROM emp WHERE empno = 9503;

empno | ename  |  job   | mgr  |      hiredate     |  sal   | comm  | deptno
------+--------+--------+------+-------------------+--------+-------+-------
 9503 |PETERSON| ANALYST| 7902 | 31-MAR-05 00:00:00|6540.00 |1200.00|  40
(1 row)
Note

The UPDATE command can be included in a FORALL statement. A FORALL statement allows a single UPDATE command to update multiple rows from values supplied in one or more collections. See Using the FORALL Statement for more information on the FORALL statement.

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