DBMS_OUTPUT.PUT_LINE('ERROR - max sal should be > MIN SAL'); RAISE sal_error;

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1 ASSN 4 FALL 2011 SOLUTION 1. CREATE OR REPLACE PROCEDURE upd_sal (p_job_id IN jobs.job_id%type, p_minsal IN jobs.min_salary%type, p_maxsal IN jobs.max_salary%type) v_dummy VARCHAR2(1); sal_error ; IF (p_maxsal < p_minsal) THEN DBMS_OUTPUT.PUT_LINE('ERROR - max sal should be > MIN SAL'); RAE sal_error; UPDATE jobs SET min_salary = p_minsal, max_salary = p_maxsal WHERE job_id = p_job_id; END upd_sal; RAE_APPLICATION_ERROR(-20001, ' This job Id does not exist'); WHEN sal_error THEN RAE_APPLICATION_ERROR(-20001, 'Data error - Max sal should be > min salary '); 2. CREATE OR REPLACE PROCEDURE check_avg_sal v_avg_sal NUMBER; CURSOR emp_sal_cur SELECT employee_id, job_id, salary ; FOR r_emp IN emp_sal_cur LOOP v_avg_sal := get_job_avgsal(r_emp.job_id); IF r_emp.salary >= v_avg_sal THEN SET exceed_avgsal = 'YES' ELSE SET exceed_avgsal = 'NO' END check_avg_sal;

2 CREATE OR REPLACE FUNCTION get_job_avgsal (p_jobid IN jobs.job_id%type) RETURN number v_avg_sal number ; SELECT (max_salary + min_salary) 2 INTO v_avg_sal FROM jobs WHERE jobs.job_id = p_jobid; RETURN v_avg_sal; END; 3. CREATE OR REPLACE FUNCTION get_service_yrs CURSOR emp_yrs_cur SELECT (end_date - start_date) 365 service v_srvcyrs NUMBER(3) := 0; v_yrs NUMBER(8) := 0; FOR r_yrs IN emp_yrs_cur LOOP EXIT WHEN emp_yrs_cur%notfound; v_srvcyrs := v_srvcyrs + r_yrs.service; SELECT (SYSDATE - hire_date) 365 INTO v_yrs v_srvcyrs := v_srvcyrs + v_yrs; RETURN v_srvcyrs; RAE_APPLICATION_ERROR(-20348, 'There is no employee with the specific ID'); END get_service_yrs;

3 4. CREATE OR REPLACE FUNCTION get_job_count v_currjob employees.job_id%type; v_numjobs NUMBER := 0; n NUMBER; SELECT COUNT(DTINCT job_id) INTO v_numjobs SELECT COUNT(job_id) INTO n WHERE employee_id = p_empid AND job_id IN (SELECT DTINCT job_id WHERE employee_id = p_empid); IF (n=0) THEN v_numjobs := v_numjobs + 1; RETURN v_numjobs; RAE_APPLICATION_ERROR(-20348, 'This employee doesnt exist'); END get_job_count; 5. CREATE OR REPLACE PACKAGE emp_job_pkg PROCEDURE upd_sal (p_jobid IN jobs.job_id%type, p_minsal IN jobs.min_salary%type, p_maxsal IN jobs.max_salary%type ); FUNCTION get_service_yrs ; FUNCTION get_job_count ; PROCEDURE check_avg_sal; END emp_job_pkg; FUNCTION get_job_avgsal (p_jobid IN jobs.job_id%type) RETURN number;

4 CREATE OR REPLACE PACKAGE BODY emp_job_pkg PROCEDURE upd_sal (p_jobid IN jobs.job_id%type, p_minsal IN jobs.min_salary%type, p_maxsal IN jobs.max_salary%type ) v_dummy VARCHAR2(1); sal_error ; IF (p_maxsal < p_minsal) THEN DBMS_OUTPUT.PUT_LINE('ERROR - max sal should be > MIN SAL'); RAE sal_error; UPDATE jobs SET min_salary = p_minsal, max_salary = p_maxsal WHERE job_id = p_jobid; RAE_APPLICATION_ERROR(-20001, ' This job Id does not exist'); WHEN sal_error THEN RAE_APPLICATION_ERROR(-20001, 'Data error - Max sal should be > min salary '); END upd_sal; FUNCTION get_service_yrs CURSOR emp_yrs_cur SELECT (end_date - start_date) 365 service v_srvcyrs NUMBER(3) := 0; v_yrs NUMBER(8) := 0; FOR r_yrs IN emp_yrs_cur LOOP EXIT WHEN emp_yrs_cur%notfound; v_srvcyrs := v_srvcyrs + r_yrs.service; SELECT (SYSDATE - hire_date) 365 INTO v_yrs v_srvcyrs := v_srvcyrs + v_yrs;

5 RETURN v_srvcyrs; RAE_APPLICATION_ERROR(-20348, 'There is no employee with the specific ID'); END get_service_yrs; FUNCTION get_job_count v_currjob employees.job_id%type; v_numjobs NUMBER := 0; n NUMBER; SELECT COUNT(DTINCT job_id) INTO v_numjobs SELECT COUNT(job_id) INTO n WHERE employee_id = p_empid AND job_id IN (SELECT DTINCT job_id WHERE employee_id = p_empid); IF (n=0) THEN v_numjobs := v_numjobs + 1; RETURN v_numjobs; RAE_APPLICATION_ERROR(-20348, 'This employee doesnt exist'); END get_job_count; PROCEDURE check_avg_sal v_avg_sal NUMBER; CURSOR emp_sal_cur SELECT employee_id, job_id, salary ; FOR r_emp IN emp_sal_cur LOOP v_avg_sal := get_job_avgsal(r_emp.job_id); IF r_emp.salary >= v_avg_sal THEN SET exceed_avgsal = 'YES'

6 ELSE SET exceed_avgsal = 'NO' END check_avg_sal; FUNCTION get_job_avgsal (p_jobid IN jobs.job_id%type) RETURN number v_avg_sal number ; SELECT (max_salary + min_salary) 2 INTO v_avg_sal FROM jobs WHERE jobs.job_id = p_jobid; RETURN v_avg_sal; END get_job_avgsal; END emp_job_pkg; 6. CREATE OR REPLACE TRIGGER check_sal_range BEFORE UPDATE OF min_salary, max_salary ON jobs FOR EACH ROW DECLARE v_minsal employees.salary%type; v_maxsal employees.salary%type; e_invalid_salrange ; SELECT MIN(salary), MAX(salary) INTO v_minsal, v_maxsal WHERE job_id = :NEW.job_id; IF (v_minsal < :NEW.min_salary) OR (v_maxsal > :NEW.max_salary) THEN RAE e_invalid_salrange; WHEN e_invalid_salrange THEN RAE_APPLICATION_ERROR(-20550, 'There are employees whose salary is out of the specified range. Cannot update with the specified salary range.'); END check_sal_range;

7 7. CREATE OR REPLACE TRIGGER Lab4_trigger AFTER INSERT OR DELETE OR UPDATE ON DEPARTMENT FOR EACH ROW -- audit if the user inserted a record IF INSERTING THEN INSERT INTO audit_dept VALUES (user ' inserted deptno: ' :new.dnumber, SYSDATE); -- audit if the user updated a record ELSIF UPDATING THEN INSERT INTO audit_dept VALUES (user ' updated deptno: ' :old.dnumber, SYSDATE); -- audit if the user deleted a record ELSIF DELETING THEN INSERT INTO audit_dept VALUES (user ' deleted deptno: ' :old.dnumber, SYSDATE); -- end if END; 8. CREATE OR REPLACE TRIGGER derive_commission_pct BEFORE INSERT OR UPDATE OF salary ON employees FOR EACH ROW WHEN (NEW.job_id = 'SA_REP') IF INSERTING THEN :NEW.commission_pct := 0; ELSIF :OLD.commission_pct NULL THEN :NEW.commission_pct := 0; ELSE :NEW.commission_pct := :OLD.commission_pct+0.05; END;

Denys Xavier denys org br) has a non-transferable license to use this Student Guide

Denys Xavier denys org br) has a non-transferable license to use this Student Guide D64250GC11 Edition 1.1 March 2012 D76392 Oracle Database: Develop PL/SQL Program Units Additional Practices Authors Prathima Trivedi Lauran Serhal Technical Contributors and Reviewers Diganta Choudhury