--基礎篇
--1.建表
create table department(departmentid integer,departmentname varchar2(30),upperdepartmentid integer,manager varchar2(30));
--2.建序列
create sequence department_seq start with 1 nocycle;
--3.建觸發器
create trigger tr_department_id before insert on department
for each row
begin
select department_seq.nextval into :new.departmentid from dual;
end;
--4.建存儲過程
create or replace procedure pr_add_department(deptName in varchar2,upperDeptName in varchar2) as
pid integer;
begin
if nvl(upperDeptName,'0')='0' then
pid:=0;
else
select departmentid into pid from department where departmentname=upperDeptName;
end if;
insert into department(departmentname,upperdepartmentid) values(deptName,pid);
commit;
end;
--5.查詢
select * from department;
--6.更新
update department set departmentname='會計電算化',upperdepartmentid=9 where departmentid=10;
--7.添加樹狀表樹根
begin
pr_add_department('江西財經學院','');
end;
--8.添加分支
begin
--pr_add_department('信息系','江西財經學院');
pr_add_department('會計專業','江西財經學院');
end;
--9.查詢樹狀表 level 分層級
select departmentid,departmentname,upperdepartmentid,level
from department
connect by prior departmentid=upperdepartmentid
start with upperdepartmentid=0
Oracle connect by prior 處理樹狀表
發表評論
所有評論
還沒有人評論，想成為第一個評論的人麼? 請在上方評論欄輸入並且點擊發布.
相關文章
遞歸處理複製變量目錄按原路徑複製到新目錄的腳本
腳本如下: 1 # coding: utf-8 2 3 """ 4 該腳本主要做把源目錄下所有文件，照搬原路徑基礎上覆制文件 5 """ 6 7 import os 8 # import shutil