bbs的数据结构和存储过程（二）

/*************************************************************************/
/* */
/* procedure : up_GetForumList */
/* */
/* Description: 取得版面列表 */
/* */
/* Parameters: None */
/* */
/* Use table: forum , bbsuser */
/* */
/* Author: [e-mail] */
/* */
/* Date: 2000/2/10 */
/* */
/* History: */
/* */
/*************************************************************************/
if exists(select * from sysobjects where id = object_id(up_GetForumList))
drop proc up_GetForumList
go

create proc up_GetForumList
as
select a.id , a.rootid , a.fatherid , a.layer , a.title , a.topiccount , a.description ,
UserID=b.id , b.UserName , b.Email , b.Homepage , b.Signature
from forum as a join BBSUser as b on a.Masterid=b.ID order by rootid , layer
go
select id , title , rootid from forum
up_getforumlist


/*************************************************************************/
/* */
/* procedure : up_InsertForum */
/* */
/* Description: 新建版面 */
/* */
/* Parameters: @a_strName : 版面名称 */
/* @a_strDescription: 版面描述 */
/* @a_intFatherID: 分类ID，如果是0说明是大分类 */
/* */
/* Use table: forum */
/* */
/* Author: [e-mail] */
/* */
/* Date: 2000/4/23 */
/* */
/* History: */
/* */
/*************************************************************************/
if exists(select * from sysobjects where id = object_id(up_InsertForum))
drop proc up_InsertForum
go

create proc up_InsertForum @a_strName varchar(50) , @a_strDescription varchar(255) , @a_intFatherID tinyint
as
/*定义局部变量*/
declare @intLayer tinyint
declare @intRootID tinyint

/*如果是版面并且没有指定分类，则返回-1*/
if(@a_intFatherID <> 0 and not exists(select * from forum where id = @a_intFatherID))
return(-1)

/*根据@a_intFatherID计算layer , rootid*/
if(@a_intFatherID = 0)
begin
select @intLayer = 0
select @intRootID = 0
end
else
begin
select @intLayer = 1
select @intRootID = @a_intFatherID
end

Insert into Forum(rootid , layer , fatherid , title , description)
values(@intRootID , @intLayer , @a_intFatherID , @a_strName , @a_strDescription)
if (@a_intFatherID = 0)
begin
select @intRootID = @@identity
update Forum set rootid = @intRootID where id = @intRootID
end
go

/*************************************************************************/
/* */
/* procedure : up_DeleteForum */
/* */
/* Description: 删除版面 */
/* */
/* Parameters: @a_intForumID : 版面id */
/* */
/* Use table: forum */
/* */
/* Author: [e-mail] */
/* */
/* Date: 2000/4/23 */
/* */
/* History: */
/* */
/*************************************************************************/
if exists(select * from sysobjects where id = object_id(up_DeleteForum))
drop proc up_DeleteForum
go

create proc up_DeleteForum @a_intForumID tinyint
as
delete from Forum where id = @a_intForumID
delete from Forum where RootID = @a_intForumID
go

select id , title , rootid , fatherid from forum

/*************************************************************************/
/* */