java-oracle中几十个实用的PL/SQL

Q.编写一个给特殊雇员加薪10%的过程，这之后，检查如果已经雇佣该雇员超过60个月，则给他额外加薪3000.
A.
CREATE OR REPLACE PROCEDURE Raise_Sal(no IN NUMBER) AS
vhiredate DATE;
vsal emp.sal%TYPE;
BEGIN
SELECT hiredate,sal INTO vhiredate,vsal FROM emp WHERE empno=no;
IF MONTHS_BETWEEN(SYSDATE,vhiredate)>60 THEN
vsal:=NVL(vsal,0)*1.1+3000;
ELSE
vsal:=NVL(vsal,0)*1.1;
END IF;
UPDATE emp SET sal=vsal WHERE empno=no;
END;
/
VARIABLE no NUMBER
BEGIN
:no:=7369;
END;
/
EXECUTE Raise_Sal(:no)
SELECT empno,ename,sal,comm,hiredate FROM emp WHERE empno=:no;

Q.编写一个函数以检查所指定雇员的薪水是否有效范围内。不同职位的薪水范围为：
Designation Raise
Clerk 1500-2500
Salesman 2501-3500
Analyst 3501-4500
Others 4501 and above.
如果薪水在此范围内，则显示消息"Salary is OK"，否则，更新薪水为该范围内的最水值。
A.
CREATE OR REPLACE FUNCTION Sal_Level(no emp.empno%TYPE) RETURN CHAR AS
vjob emp.job%TYPE;
vsal emp.sal%TYPE;
vmesg CHAR(50);
BEGIN
SELECT job,sal INTO vjob,vsal FROM emp WHERE empno=no;
IF vjob=´CLERK´ THEN
IF vsal>=1500 AND vsal<=2500 THEN
vmesg:=´Salary is OK.´;
ELSE
vsal:=1500;
vmesg:=´Have updated your salary to ´||TO_CHAR(vsal);
END IF;
ELSIF vjob=´SALESMAN´ THEN
IF vsal>=2501 AND vsal<=3500 THEN
vmesg:=´Salary is OK.´;
ELSE
vsal:=2501;
vmesg:=´Have updated your salary to ´||TO_CHAR(vsal);
END IF;
ELSIF vjob=´ANALYST´ THEN
IF vsal>=3501 AND vsal<=4500 THEN
vmesg:=´Salary is OK.´;
ELSE
vsal:=3501;
vmesg:=´Have updated your salary to ´||TO_CHAR(vsal);
END IF;
ELSE
IF vsal>=4501 THEN
vmesg:=´Salary is OK.´;
ELSE
vsal:=4501;
vmesg:=´Have updated your salary to ´||TO_CHAR(vsal);
END IF;
END IF;
UPDATE emp SET sal=vsal WHERE empno=no;
RETURN vmesg;
END;
/
DECLARE
vmesg CHAR(50);
vempno emp.empno%TYPE;
BEGIN
vempno:=&empno;
vmesg:=Sal_Level(vempno);
DBMS_OUTPUT.PUT_LINE(vmesg);
END;
/
--SELECT empno,ename,sal,comm,hiredate FROM emp WHERE empno=:no;

Q.编写一个函数以显示该雇员在此组织中的工作天数。
A.
CREATE OR REPLACE FUNCTION Hire_Day(no emp.empno%TYPE) RETURN NUMBER AS
vhiredate emp.hiredate%TYPE;
vday NUMBER;

BEGIN
SELECT hiredate INTO vhiredate FROM emp WHERE empno=no;
vday:=CEIL(SYSDATE-vhiredate);
RETURN vday;
END;
/
DECLARE
vday NUMBER;
vempno emp.empno%TYPE;
BEGIN
vempno:=&empno;
vday:=Hire_Day(vempno);
DBMS_OUTPUT.PUT_LINE(vday);
END;
/

--SELECT empno,ename,sal,comm,hiredate FROM emp WHERE empno=:no;

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