------創建數據庫data_Test
-----
create
database data_Test
GO
use
data_Test
GO
create
table tb_TestTable --創建表
(
id
int identity(1,1)
primary key,
userName
nvarchar(20) not null,
userPWD
nvarchar(20) not null,
userEmail
nvarchar(40) null
)
GO
------插入數據------
set identity_insert
tb_TestTable on
declare
@count int
set @count=1
while @count<=2000000
begin
insert
into tb_TestTable(id,userName,userPWD,userEmail) values(@count,'admin','admin888','[email protected]')
set @count=@count+1
end
set identity_insert
tb_TestTable off
---1、利用select
top 和select not in進行分頁，具體代碼如下
create
procedure proc_paged_with_notin --利用select top and select not in
(
@pageIndex
int,
--頁索引
@pageSize
int --每頁記錄數
)
as
begin
set nocount
on;
declare
@timediff datetime --耗時
declare
@sql nvarchar(500)
select
@timediff=Getdate()
set @sql='select
top '+str(@pageSize)+'
* from tb_TestTable where(ID not in(select top '+str(@pageSize*@pageIndex)+'
id from tb_TestTable order by ID ASC)) order by ID'
execute(@sql)
--因select top後不支技直接接參數，所以寫成了字符串@sql
select
datediff(ms,@timediff,GetDate()) as 耗時
set nocount
off;
end
---2、利用select
top 和 select max(列鍵)---
create
procedure proc_paged_with_selectMax --利用select top and select max(列)
(
@pageIndex
int,
--頁索引
@pageSize
int --頁記錄數
)
as
begin
set nocount
on;
declare
@timediff datetime
declare
@sql nvarchar(500)
select
@timediff=Getdate()
set @sql='select
top '+str(@pageSize)+'
* From tb_TestTable where(ID>(select max(id) From (select top '+str(@pageSize*@pageIndex)+'
id From tb_TestTable order by ID) as TempTable)) order by ID'
execute(@sql)
select
datediff(ms,@timediff,GetDate()) as 耗時
set nocount
off;
end
---3、利用select
top和中間變量--此方法因網上有人說效果最佳---
create
procedure proc_paged_with_Midvar --利用ID>最大ID值和中間變量
(
@pageIndex
int,
@pageSize
int
)
as
declare
@count int
declare
@ID int
declare
@timediff datetime
declare
@sql nvarchar(500)
begin
set nocount
on;
select
@count=0,@ID=0,@timediff=getdate()
select
@count=@count+1,@ID=case when
@count<=@pageSize*@pageIndex then ID else @ID
end from tb_testTable order by id
set @sql='select
top '+str(@pageSize)+'
* from tb_testTable where ID>'+str(@ID)
execute(@sql)
select
datediff(ms,@timediff,getdate()) as 耗時
set nocount
off;
end
---4、利用Row_number()
此方法爲SQL server 2005中新的方法,利用Row_number()給數據行加上索引
create
procedure proc_paged_with_Rownumber --利用SQL 2005中的Row_number()
(
@pageIndex
int,
@pageSize
int
)
as
declare
@timediff datetime
begin
set nocount
on;
select
@timediff=getdate()
select
* from (select *,Row_number() over(order by ID asc) as IDRank
from tb_testTable) as IDWithRowNumber
where IDRank>@pageSize*@pageIndex and IDRank<@pageSize*(@pageIndex+1)
select
datediff(ms,@timediff,getdate()) as 耗時
set nocount
off;
end
---5、利用臨時表及Row_number
create
procedure proc_CTE --利用臨時表及Row_number
(
@pageIndex
int,
--頁索引
@pageSize
int --頁記錄數
)
as
set nocount
on;
declare
@ctestr nvarchar(400)
declare
@strSql nvarchar(400)
declare
@datediff datetime
begin
select
@datediff=GetDate()
set @ctestr='with
Table_CTE as
(select
ceiling((Row_number() over(order by ID ASC))/'+str(@pageSize)+')
as page_num,*
from tb_TestTable)';
set @strSql=@ctestr+'
select * From Table_CTE where page_num='+str(@pageIndex)
end
begin
execute
sp_executesql @strSql
select
datediff(ms,@datediff,GetDate())
set nocount
off;
end
