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Posted by / 27-May-2020 17:48

Validating database query results

Otherwise, a malicious user who receives the error message "invalid password" but not "invalid user name" (or the reverse) can realize that he or she has guessed one of these correctly.

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NEXTVAL; INSERT INTO departments ( department_id, department_name, manager_id, location_id ) VALUES (deptid, dname, mgrid, locid); END; / DECLARE plsql_block VARCHAR2(500); new_deptid NUMBER(4); new_dname VARCHAR2(30) := 'Advertising'; new_mgrid NUMBER(6) := 200; new_locid NUMBER(4) := 1700; BEGIN Example 7-2 Dynamically Invoking Subprogram with BOOLEAN Formal Parameter In this example, the dynamic PL/SQL block is an anonymous PL/SQL block that invokes a subprogram that has a formal parameter of the PL/SQL (but not SQL) data type Example 7-3 Dynamically Invoking Subprogram with RECORD Formal Parameter In this example, the dynamic PL/SQL block is an anonymous PL/SQL block that invokes a subprogram that has a formal parameter of the PL/SQL (but not SQL) data type Example 7-4 Dynamically Invoking Subprogram with Assoc. PUT_LINE(w x y z); END; / DECLARE a NUMBER := 4; b NUMBER := 7; plsql_block VARCHAR2(100); BEGIN plsql_block := 'BEGIN calc_stats(:x, :x, :y, :x); END;'; EXECUTE IMMEDIATE plsql_block USING a, b; Result Set #1 FIRST_NAME LAST_NAME -------------------- ------------------------- Jonathon Taylor Result Set #2 CITY STATE_PROVINCE ------------------------------ ------------------------- Sydney New South Wales CREATE OR REPLACE PROCEDURE get_employee_info (id IN VARCHAR2) AUTHID DEFINER AS rc SYS_REFCURSOR; BEGIN -- Return employee info OPEN rc FOR SELECT first_name, last_name, email, phone_number FROM employees WHERE employee_id = id; DECLARE c INTEGER; rc SYS_REFCURSOR; n NUMBER; first_name VARCHAR2(20); last_name VARCHAR2(25); email VARCHAR2(25); phone_number VARCHAR2(20); job_title VARCHAR2(35); start_date DATE; end_date DATE; BEGIN DBMS_OUTPUT.