DELETE v13

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The DELETE 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 DELETE command. Thus, SPL variables and parameters can be used to supply values to the delete operation.

CREATE OR REPLACE PROCEDURE emp_delete (
    p_empno         IN emp.empno%TYPE
)
IS
BEGIN
    DELETE FROM emp WHERE empno = p_empno;

    IF SQL%FOUND THEN
        DBMS_OUTPUT.PUT_LINE('Deleted Employee # : ' || p_empno);
    ELSE
        DBMS_OUTPUT.PUT_LINE('Employee # ' || p_empno || ' not found');
    END IF;
END;

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

The following shows the deletion of an employee using this procedure.

EXEC emp_delete(9503);

Deleted Employee # : 9503

SELECT * FROM emp WHERE empno = 9503;

 empno | ename | job | mgr | hiredate | sal | comm | deptno
-------+-------+-----+-----+----------+-----+------+--------
(0 rows)
Note

The DELETE command can be included in a FORALL statement. A FORALL statement allows a single DELETE command to delete 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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