create or replace function f_get_name(t_empno in varchar2)
return varchar2 is
v_emp_name emp.ename%type;
begin
select e.ename into v_emp_name
from emp e where e.empno=t_empno;
return v_emp_name;
end f_get_name;
select f_get_name('7698') from dual
--根據部門號查詢部門名稱，使用函式 查詢人員姓名及部門名稱
create or replace function f_get_name_by_deptno(t_deptno in varchar2)
return varchar2 is
v_dept_name dept.dname%type;
begin
select d.dname into v_dept_name
from dept d where d.deptno=v_dept_name;
return v_dept_name;
end f_get_name_by_deptno;
select ename,f_get_name_by_deptno(deptno) from emp
select * from emp
--create or replace procedure
--儲存過程的呼叫
--exec 過程名()
create or replace procedure proc_demo(
dept_no number default 10,sal_sum out number,emp_count out number)
isbegin
select sum(sal),count(*) into sal_sum,emp_count
from emp where deptno=dept_no;
end proc_demo;
create or replace procedure proc_demo2(up_count out number) is
begin
up_count := 0;
declare
cursor e_job is
select empno, job from emp;
begin
for v_job in e_job loop
if v_job.job = 'clerk' then
update emp set job = '辦事員' where empno = v_job.empno;
elsif v_job.job = 'salesman' then
update emp set job = '銷售人員' where empno = v_job.empno;
elsif v_job.job = 'manager' then
update emp set job = '經理' where empno = v_job.empno;
else
update emp set job = '其他' where empno = v_job.empno;
end if;
up_count := up_count + 1;
end loop;
commit;
end;
end proc_demo2;
select * from emp
create table manager as select * from emp
select * from manager
--向manager表中插入職位為經理年薪大於7w的資料
--如果manager表裡已經存在此員工，則不插入
--如果不存在，在插入。輸出引數是插入的記錄數
create or replace procedure proc_demo3(
up_no out number)
is begin
up_no:=0;
declare
cursor c_year_sal is
select empno, nvl(e.sal,0)*12+nvl(e.comm,0) as yearsal from emp;
begin
if c_year_sal.yearsal>70000 then
insert into manager select * from emp where empno = c_year_sal.empno;
else
exit;
end if;
commit;
end;
end proc_demo3;
create or replace procedure proc_demo(
dept_no number default 10,
sal_sum out number,
emp_count out number)
isbegin
select sum(sal),count(*) into sal_sum,emp_count
from emp where deptno=dept_no;
end proc_demo;
create or replace procedure add_man2(m_num out number) is
u_row_num number;
begin
m_num := 0;
select count(1)
into u_row_num
from manager
where job = '經理'
and (nvl(sal, 0) * 12 + nvl(comm, 0)) > 70000;
if (u_row_num < 1) then
--不存在
insert into manager
(empno, ename, job, sal, comm)
values
(8654, '小陳', '經理', 6000, 500);
commit;
m_num := m_num + 1;
end if;
end;
select * from manager;
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