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set serveroutput on
update t_onlinestate set statedesc='隐身' where stateid=3;
--查询状态表：
select * from t_onlinestate;
--查询交友策略表:
select * from t_friendshippolicy;
--查询管理员表：
select * from t_admin;
--查询用户表：
select * from t_user;
--查询好友表：
select * from t_friend;
--查询聊天信息表：
select * from t_message;
---交友策略表
create table t_friendshippolicy
(
polid number(1) not null primary key,
policy nvarchar2(200) not null unique
);
insert into t_friendshippolicy（polid,policy）
values(1,'允许任何人加我为好友');
insert into t_friendshippolicy（polid,policy）
values(2,'不允许任何人加我为好友');
insert into t_friendshippolicy（polid,policy）
values(3,'经验证才允许别人加我为好友');
---用户状态表
create table t_onlinestate
(
stateid number(1) not null primary key,
statedesc nvarchar2(10) not null unique
);
insert into t_onlinestate(stateid,statedesc)
values(1，'在线');
insert into t_onlinestate(stateid,statedesc)
values(2，'离线');
insert into t_onlinestate(stateid,statedesc)
values(3，'隐身');
insert into t_onlinestate(stateid,statedesc)
values(4，'忙碌');
---管理员表
create table t_admin
(
adminid number(10) not null primary key,
adminname nvarchar2(20) not null unique,
adminpwd nvarchar2(100) not null
);
--创建序列
create sequence seq_t_admin
start with 1
increment by 1
nominvalue
maxvalue 10000
nocycle
nocache
/
--创建触发器
create trigger trigger_t_admin
before insert on t_admin --当向表中执行插入操作时触发此触发器
for each row --对每一行都检查是否触发
begin
select seq_t_admin.nextval into:new.adminid from dual;
end;
/
--添加管理员数据
insert into t_admin(adminname,adminpwd)
values('唯一','weiyi');
insert into t_admin(adminname,adminpwd)
values('小少','xiaoshao');
---用户表
create table t_user
(
userid number(38) not null primary key,
pwd nvarchar2(100) not null,
nikename nvarchar2(10) not null,
sex number(1) check(sex=1 or sex=0),
birthday date,
currstate number(1) default 0,
friendshippolicy number(1),
foreign key (currstate) references t_onlinestate(stateid) ,
foreign key (friendshippolicy) references t_friendshippolicy(polid)
);
--创建表时没默认，修改成默认数值：
alter table t_user modify currstate number(1) default 0;
--创建序列
create sequence seq_t_user
start with 10001
increment by 1
nomaxvalue
nocycle
nocache
/
--创建触发器
create or replace trigger trigger_t_user
before insert on t_user --当向表中执行插入操作时触发此触发器
for each row --对每一行都检查是否触发
begin
select seq_t_user.nextval into:new.userid from dual;
end;
/
--在用户表中插入值**
insert into t_user(pwd,nikename,sex,birthday,currstate,friendshippolicy)
values('000000','石晓涛','1',to_date('2008-08-05','yyyy-mm-dd'),1,1);
--插入数据显示无效未通过重新验证
insert into t_user(pwd,nikename,sex,birthday,currstate,friendshippolicy)
values('111111','徐本锡','1',to_date('2008-08-06','yyyy-mm-dd'),2,2);
insert into t_user(pwd,nikename,sex,birthday,currstate,friendshippolicy)
values('222222','孙培培','0',to_date('2008-08-07','yyyy-mm-dd'),3,1);
insert into t_user(pwd,nikename,sex,birthday,currstate,friendshippolicy)
values('333333','李巧丽','0',to_date('2008-08-08','yyyy-mm-dd'),4,1);
insert into t_user(pwd,nikename,sex,birthday,currstate,friendshippolicy)
values('444444','李慧慧','0',to_date('2008-08-09','yyyy-mm-dd'),3,1);
insert into t_user(pwd,nikename,sex,birthday,currstate,friendshippolicy)
values('555555','刘杰','0',to_date('2008-08-10','yyyy-mm-dd'),2,1);
--创建添加用户的存储过程：
create procedure sp_add_user(pwd1 varchar2,nikename1 varchar2,sex1 number,birthday1 date,currstate1 number,friendshippolicy1 number)
as
begin
insert into t_user(pwd,nikename,sex,birthday,currstate,friendshippolicy)
values(pwd1,nikename1,sex1,birthday1,currstate1,friendshippolicy1);
commit;
exception
when others then
dbms_output.put_line('添加失败！');
rollback;
end sp_add_user;
/
--执行添加用户的存储过程：
运行黑框
exec sp_add_user('888888','马云','0',to_date('2008-08-13','yyyy-mm-dd'),1,3);
PL/SQL里
begin
sp_add_user('888888','马云','0',to_date('2008-08-13','yyyy-mm-dd'),1,1);
end;
--创建好友表
create table t_friend
(
ufid number(38) not null primary key,
userid number(38) not null,
friendid number(38) not null,
foreign key (userid) references t_user(userid),
foreign key (friendid) references t_user(userid)
);
--创建序列
create sequence seq_t_friend
start with 1
increment by 1
nominvalue
maxvalue 10000
nocycle
nocache
/
--创建触发器
create or replace trigger trigger_t_friend
before insert on t_friend --当向表中执行插入操作时触发此触发器
for each row --对每一行都检查是否触发
begin
select seq_t_friend.nextval into:new.ufid from dual;
end;
/
--插入值*
insert into t_friend(userid,friendid)
values(10001,10006);
insert into t_friend(userid,friendid)
values(10002,10007);
insert into t_friend(userid,friendid)
values(10003,10008);
--聊天信息表***倒数三个属性检查约束及默认值设置
create table t_message
(
messageid number(38) not null primary key,
fromuserid number(38) not null,
touserid number(38) not null,
foreign key(fromuserid) references t_user(userid),
foreign key(touserid) references t_user(userid),
content nvarchar2(500),
messagetype number(1) check(messagetype=1 or messagetype=0),
state number(1) check(state=1 or state=0),
sendtime date
);
--创建序列
create sequence seq_t_message
start with 1
increment by 1
nominvalue
maxvalue 10000
nocycle
nocache
/
--创建触发器
create trigger trigger_t_message
before insert on t_message --当向表中执行插入操作时触发此触发器
for each row --对每一行都检查是否触发
begin
select seq_t_message.nextval into:new.messageid from dual;
end;
/
insert into t_message(fromuserid,touserid,content,messagetype,state,sendtime)
values(10001,10006,'在吗？',1,1,to_date('2015-08-05','yyyy-mm-dd'));
insert into t_message(fromuserid,touserid,content,messagetype,state,sendtime)
values(10002,10007,'干什么呢啊？',1,1,to_date('2005-07-30','yyyy-mm-dd'));
--创建视图：查询某个好友的聊天记录
create view f_message
as
select content from t_message where touserid =10006;
select * from f_message;
--创建视图：查询某个用户的所有好友。
create or replace view all_friend
as
select userid,friendid from t_friend where userid=10001;
select * from all_friend;
--包规范（查找用户的过程）
create or replace package search_user
as
type usercursor is ref cursor;
procedure sp_basic_search(u_id number,u_name nvarchar2);--普通查找
procedure senior_search_user(u_sex nvarchar2,u_age number);--高级查找
end search_user;
/
--包主体（查找用户的过程）
create or replace package body search_user
as
--普通查找
procedure sp_basic_search(u_id number,u_name nvarchar2)--普通查找
as
s_u_all t_user % rowtype;
u_count number;s_u_all t_user % rowtype;s_u_id number;s_u_nik nvarchar2(20);s_u_sex nvarchar2(5);
begin
case
when u_id is not null then
select count(*) into u_count from t_user where userid=u_id;
if u_count=!0 then
select userid,nikename,sex into s_u_id,s_u_nik,s_u_sex from t_user where userid=u_id;
dbms_output.put_line('ID编号：'||s_u_id||' 昵称：'||s_u_nik||' 性别'||s_u_sex);
else dbms_output.put_line('用户不存在！');
end if
when u_id is null and u_name is not null then
select count(*) into u_count from t_user where nikename=u_name;
if u_count=!0 then
select userid,nikename,sex into s_u_id,s_u_nik,s_u_sex from t_user where nikename=u_name;
dbms_output.put_line('ID编号：'||s_u_id||' 昵称：'||s_u_nik||' 性别'||s_u_sex);
else dbms_output.put_line('用户不存在！');
end if;
else dbms_output.put_line('号码和昵称不能同时为空！');
end case;
end sp_basic_search;
--高级查找
procedure senior_search_user(u_sex nvarchar2,u_age number)
as
du_cursor usercursor;
u_count number;
u_id1 number;
u_age1 number;
s_u_all t_user % rowtype;s_u_id number;s_u_nik nvarchar2(20);s_u_sex nvarchar2(5);
begin
case
when u_sex='女' AND u_age is not null then
select count(*) into u_count from t_user where sex=0 and (extract(year from sysdate)-extract(year from birthday))=u_age;
open du_cursor for select userid from t_user where sex=0 and (extract(year from sysdate)-extract(year from birthday))=u_age;
if u_count<>0 then
loop
fetch du_cursor into u_id1;
exit when du_cursor%notfound;
select userid,nikename,decode(sex,0,'女',1,'男'),(extract(year from sysdate)-extract(year from birthday))into s_u_id,s_u_nik,s_u_sex,u_age1 from t_user where userid=u_id1;
dbms_output.put_line('ID：'||s_u_id||' 昵称：'||s_u_nik||' 性别：'||s_u_sex||' 年龄：'||u_age1);
end loop;
close du_cursor;
else dbms_output.put_line('用户不存在！');
end if;
when u_sex='男' AND u_age is not null then
select count(*) into u_count from t_user where sex=1 and (extract(year from sysdate)-extract(year from birthday))=u_age;
open du_cursor for select userid from t_user where sex=1 and (extract(year from sysdate)-extract(year from birthday))=u_age;
if u_count<>0 then
loop
fetch du_cursor into u_id1;
exit when du_cursor%notfound;
select userid,nikename,decode(sex,0,'女',1,'男'),(extract(year from sysdate)-extract(year from birthday))into s_u_id,s_u_nik,s_u_sex,u_age1 from t_user where userid=u_id1;
dbms_output.put_line('ID：'||s_u_id||' 昵称：'||s_u_nik||' 性别：'||s_u_sex||' 年龄：'||u_age1);
end loop;
close du_cursor;
else dbms_output.put_line('用户不存在！');
end if;
else dbms_output.put_line('输入有误！');
end case;
end senior_search_user;
end search_user;
/
--执行测试
set serveroutput on
exec search_user.sp_basic_search(10002,'徐本锡');
exec search_user.senior_search_user('男',7);
set serveroutput on
--创建查询用户信息视图
create or replace view v_user
as
select userid,
pwd ,
nikename,
decode(sex,0,'女',1,'男')性别,
birthday,
statedesc 状态,
policy as 交友策略
from t_user join t_onlinestate on currstate=stateid join t_friendshippolicy on friendshippolicy=polid;
--执行查询用户信息视图
select* from v_user;
--好友管理包规范
create or replace package manage_friend
as
--申请添加好友
procedure add_friend(i_userid t_user.userid%type,i_friendid t_user.userid%type);
--处理添加好友信息
procedure deal_friend(i_userid t_user.userid%type ,i_friendid t_user.userid%type,sel number);
procedure del_friend(id1 number,id2 number);--删除好友的过程
end manage_friend;
/
--好友管理包主体
create or replace package body manage_friend
as
--申请添加好友
procedure add_friend(
i_userid t_user.userid%type,
i_friendid t_user.userid%type)
is
i_friendshippolicy number;
mycount number;
o_message varchar2(50);
begin
select count(*) into mycount from t_user where t_user.userid=i_friendid;
if mycount=0 then
o_message :='没有该用户！';
else
search_user.sp_basic_search(i_friendid,null);
select friendshippolicy into i_friendshippolicy from t_user where userid=i_friendid;
case i_friendshippolicy
when 1 then
insert into t_friend(userid,friendid)values(i_userid,i_friendid);
o_message:='添加成功！';
when 2 then
o_message:='不能添加！';
when 3 then
o_message:='发送验证信息！';
insert into t_message(fromuserid,touserid,content,messagetype,state,sendtime) values(i_userid,i_friendid,'我想加你为好友',0,0,sysdate);
end case;
end if;
dbms_output.put_line(o_message);
end add_friend;
--处理添加好友信息
procedure deal_friend(i_userid t_user.userid%type ,i_friendid t_user.userid%type,sel number)
is
o_message varchar2(50);
begin
update t_message set t_message.state=1 where t_message.content='我想加你为好友' and t_message.state=0 and t_message.fromuserid=i_friendid;
case sel
when 1 then
insert into t_friend(userid,friendid)values(i_userid,i_friendid);
o_message :='处理成功，已经添加好友';
when 2 then
o_message :='拒绝添加好友！';
end case;
dbms_output.put_line(o_message);
end deal_friend;
--删除好友的过程
procedure del_friend(id1 number,id2 number)
as
cou number;
begin
select count(*) into cou from t_friend where userid=id1 and friendid=id2 or userid=id2 and friendid=id1;
if cou !=0 then
delete t_friend where userid=id1 and friendid=id2 or userid=id2 and friendid=id1;
dbms_output.put_line('删除成功！');
else dbms_output.put_line('好友不存在！');
end if;
end del_friend;
end manage_friend;
/
--申请添加好友测试
exec manage_friend.add_friend(10001,10009);
--处理添加好友信息
exec manage_friend.deal_friend(10001,10009,1);
exec manage_friend.deal_friend(10001,10009,2);
--删除好友测试
select * from t_friend;
insert into t_friend(userid,friendid)
values(10004,10005);
insert into t_friend(userid,friendid)
values(10005,10004);
set serveroutput on
exec manage_friend.del_friend(10001,10009);
--聊天信息管理
--包规范
create or replace package manage_message
as
--查找消息
procedure sel_message(u_id number,f_id number);
--添加消息
procedure add_message(u_id number,f_id number,a nvarchar2);
--删除消息
procedure del_message(u_id number,f_id number);
end manage_message;
/
-包主体
create or replace package body manage_message
as
--查找消息
procedure sel_message(u_id number,f_id number)
is
c1 number;c2 number;m t_message%rowtype;c3 number;
begin
select count(*) into c1 from t_user where userid=u_id or userid=f_id;
if c1=2 then
select count(*) into c2 from t_friend where userid=u_id and friendid=f_id or userid=f_id and friendid=u_id;
if c2!=0 then
select count(*) into c3 from t_message where fromuserid=u_id and touserid=f_id or fromuserid=f_id and touserid=u_id;
if c3 !=0 then
select * into m from t_message where fromuserid=u_id and touserid=f_id or fromuserid=f_id and touserid=u_id;
dbms_output.put_line('发送者：'||m.fromuserid||' 接收者：'||m.touserid||' 消息内容：'||m.content||' 发送时间'||m.sendtime);
else dbms_output.put_line('聊天信息为空！');
end if;
else dbms_output.put_line('不是好友关系！');
end if;
else dbms_output.put_line('用户不存在！');
end if;
end sel_message;
--添加消息
procedure add_message(u_id number,f_id number,a nvarchar2)
is
c1 number;c2 number;
begin
select count(*) into c1 from t_user where userid=u_id or userid=f_id;
if c1=2 then
select count(*) into c2 from t_friend where userid=u_id and friendid=f_id or userid=f_id and friendid=u_id;
if c2!=0 then
insert into t_message(fromuserid,touserid,content,messagetype,state,sendtime)
values(u_id,f_id,a,1,1,sysdate);
dbms_output.put_line('添加消息成功！');
else dbms_output.put_line('不是好友关系！');
end if;
else dbms_output.put_line('用户不存在！');
end if;
end add_message;
--删除消息
procedure del_message(u_id number,f_id number)
is
c1 number;c2 number;m t_message%rowtype;c3 number;
begin
select count(*) into c1 from t_user where userid=u_id or userid=f_id;
if c1=2 then
select count(*) into c2 from t_friend where userid=u_id and friendid=f_id or userid=f_id and friendid=u_id;
if c2!=0 then
select count(*) into c3 from t_message where fromuserid=u_id and touserid=f_id or fromuserid=f_id and touserid=u_id;
if c3 !=0 then
delete from t_message where fromuserid=u_id and touserid=f_id or fromuserid=f_id and touserid=u_id;
dbms_output.put_line('删除消息成功！');
else dbms_output.put_line('聊天信息为空！');
end if;
else dbms_output.put_line('不是好友关系！');
end if;
else dbms_output.put_line('用户不存在！');
end if;
end del_message;
end manage_message;
/
--查询聊天信息测试
exec manage_message.sel_message(10003,10008);
--添加聊天信息测试
declare a nvarchar2(500);
begin
a:='快来上课！老师点名了!';
manage_message.add_message(10003,10008,a);
end;
/
--删除聊天信息测试
exec manage_message.del_message(10003,10008);
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原文地址：http://blog.csdn.net/xubenxismile/article/details/51305514
