以下是我的存储过程,很奇怪,我单独把 select AnnounceID,parentID,boardID,UserName,child,Topic,DateAndTime,hits,RootID,locktopic,istop,isbest,isvote,LastPost from bbs1 where boardID=@boardID and parentID=0 and not locktopic=2 ORDER BY istop desc,times desc
这句弄出来运行,就有记录返回。在存储过程当中,就没有记录返回。这到底是怎么回事。
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ALTER PROCEDURE [dbo].[bbs_list]
@boardid int=1,
@pagenow int=1, --当前页数
@pagesize int=1, --定义每页面帖子数目
@tl int=0 --按时间段查询
AS
set nocount on
declare @int_topnum int
declare @int_timenum int
declare @var_times varchar(5000)
select @int_topnum=count(*) from bbs1 where istop=1 and layer=1 and boardID=@boardID
select @int_timenum=(@pagenow-1)*@pagesize-@int_topnumif @tl>0
if @pagenow>1
begin
set rowcount @int_timenum
select @var_times=times from bbs1 where boardID=@boardID and parentID=0 and istop=0 order by times desc
set rowcount @pagesize
select AnnounceID,parentID,boardID,UserName,child,Topic,DateAndTime,hits,RootID,locktopic,istop,isbest,isvote,LastPost from bbs1 where boardID=@boardID and parentID=0 and istop=0 and times < @var_times and not locktopic=2 and dateadd(day,@tl,DateAndTime)>getdate() ORDER BY times desc
set nocount off
return
end
else
begin
set rowcount @pagesize
select AnnounceID,parentID,boardID,UserName,child,Topic,DateAndTime,hits,RootID,locktopic,istop,isbest,isvote,LastPost from bbs1 where boardID=@boardid and parentID=0 and not locktopic=2 and dateadd(day,@tl,DateAndTime)>getdate() ORDER BY istop desc,times desc
end
else
if @pagenow>1
begin
set rowcount @int_timenum
select @var_times=times from bbs1 where boardID=@boardID and parentID=0 and istop=0 order by times desc
set rowcount @pagesize
select AnnounceID,parentID,boardID,UserName,child,Topic,DateAndTime,hits,RootID,locktopic,istop,isbest,isvote,LastPost from bbs1 where boardID=@boardID and parentID=0 and istop=0 and times < @var_times and not locktopic=2 ORDER BY times desc
set nocount off
return
end
else
begin
set rowcount @pagesize
select AnnounceID,parentID,boardID,UserName,child,Topic,DateAndTime,hits,RootID,locktopic,istop,isbest,isvote,LastPost from bbs1 where boardID=@boardID and parentID=0 and not locktopic=2 ORDER BY istop desc,times desc
end----------------------------------------------------------------------------------------------------------
这句弄出来运行,就有记录返回。在存储过程当中,就没有记录返回。这到底是怎么回事。
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ALTER PROCEDURE [dbo].[bbs_list]
@boardid int=1,
@pagenow int=1, --当前页数
@pagesize int=1, --定义每页面帖子数目
@tl int=0 --按时间段查询
AS
set nocount on
declare @int_topnum int
declare @int_timenum int
declare @var_times varchar(5000)
select @int_topnum=count(*) from bbs1 where istop=1 and layer=1 and boardID=@boardID
select @int_timenum=(@pagenow-1)*@pagesize-@int_topnumif @tl>0
if @pagenow>1
begin
set rowcount @int_timenum
select @var_times=times from bbs1 where boardID=@boardID and parentID=0 and istop=0 order by times desc
set rowcount @pagesize
select AnnounceID,parentID,boardID,UserName,child,Topic,DateAndTime,hits,RootID,locktopic,istop,isbest,isvote,LastPost from bbs1 where boardID=@boardID and parentID=0 and istop=0 and times < @var_times and not locktopic=2 and dateadd(day,@tl,DateAndTime)>getdate() ORDER BY times desc
set nocount off
return
end
else
begin
set rowcount @pagesize
select AnnounceID,parentID,boardID,UserName,child,Topic,DateAndTime,hits,RootID,locktopic,istop,isbest,isvote,LastPost from bbs1 where boardID=@boardid and parentID=0 and not locktopic=2 and dateadd(day,@tl,DateAndTime)>getdate() ORDER BY istop desc,times desc
end
else
if @pagenow>1
begin
set rowcount @int_timenum
select @var_times=times from bbs1 where boardID=@boardID and parentID=0 and istop=0 order by times desc
set rowcount @pagesize
select AnnounceID,parentID,boardID,UserName,child,Topic,DateAndTime,hits,RootID,locktopic,istop,isbest,isvote,LastPost from bbs1 where boardID=@boardID and parentID=0 and istop=0 and times < @var_times and not locktopic=2 ORDER BY times desc
set nocount off
return
end
else
begin
set rowcount @pagesize
select AnnounceID,parentID,boardID,UserName,child,Topic,DateAndTime,hits,RootID,locktopic,istop,isbest,isvote,LastPost from bbs1 where boardID=@boardID and parentID=0 and not locktopic=2 ORDER BY istop desc,times desc
end----------------------------------------------------------------------------------------------------------
http://topic.csdn.net/u/20100203/17/8F916471-597D-481A-B170-83BCEFE3B199.html应一个朋友的要求,贴上收藏的SQL常用分页的办法~~ 表中主键必须为标识列,[ID] int IDENTITY (1,1) 1.分页方案一:(利用Not In和SELECT TOP分页) 语句形式:
SELECT TOP 页记录数量 *
FROM 表名
WHERE (ID NOT IN
(SELECT TOP (每页行数*(页数-1)) ID
FROM 表名
ORDER BY ID))
ORDER BY ID
//自己还可以加上一些查询条件
例:
select top 2 *
from Sys_Material_Type
where (MT_ID not in
(select top (2*(3-1)) MT_ID from Sys_Material_Type order by MT_ID))
order by MT_ID 2.分页方案二:(利用ID大于多少和SELECT TOP分页) 语句形式:
SELECT TOP 每页记录数量 *
FROM 表名
WHERE (ID >
(SELECT MAX(id)
FROM (SELECT TOP 每页行数*页数 id FROM 表
ORDER BY id) AS T)
)
ORDER BY ID 例:
SELECT TOP 2 *
FROM Sys_Material_Type
WHERE (MT_ID >
(SELECT MAX(MT_ID)
FROM (SELECT TOP (2*(3-1)) MT_ID
FROM Sys_Material_Type
ORDER BY MT_ID) AS T))
ORDER BY MT_ID 3.分页方案三:(利用SQL的游标存储过程分页)
create procedure SqlPager
@sqlstr nvarchar(4000), --查询字符串
@currentpage int, --第N页
@pagesize int --每页行数
as
set nocount on
declare @P1 int, --P1是游标的id
@rowcount int
exec sp_cursoropen @P1 output,@sqlstr,@scrollopt=1,@ccopt=1, @rowcount=@rowcount output
select ceiling(1.0*@rowcount/@pagesize) as 总页数--,@rowcount as 总行数,@currentpage as 当前页
set @currentpage=(@currentpage-1)*@pagesize+1
exec sp_cursorfetch @P1,16,@currentpage,@pagesize
exec sp_cursorclose @P1
set nocount off 4.总结:
其它的方案:如果没有主键,可以用临时表,也可以用方案三做,但是效率会低。
建议优化的时候,加上主键和索引,查询效率会提高。 通过SQL 查询分析器,显示比较:我的结论是:
分页方案二:(利用ID大于多少和SELECT TOP分页)效率最高,需要拼接SQL语句
分页方案一:(利用Not In和SELECT TOP分页) 效率次之,需要拼接SQL语句
分页方案三:(利用SQL的游标存储过程分页) 效率最差,但是最为通用