创建大容量测试数据

标签：数据   数据库   sql   re   ar   c   

create database data_Test  --创建数据库data_Test
 GO
 use data_Test
 GO
 create table tb_TestTable   --创建表
 (
 id int identity(1,1) primary key,
 userName nvarchar(20) not null,
 userPWD nvarchar(20) not null,
 userEmail nvarchar(40) null
 )
 GO
 
-- --插入数据
set identity_insert tb_TestTable on --自己插入nameid字段值用set identity_insert on手动插入了
declare @count int
set @count=1
while @count<=2000000
begin  
insert into tb_TestTable(id,userName,userPWD,userEmail) values(@count,‘admin‘,‘admin888‘,‘admin@yahoo.com.cn‘)
set @count=@count+1
end
set identity_insert tb_TestTable OFF


create procedure proc_paged_with_notin  --利用select top and select not in
(
@pageIndex int,  --页索引
@pageSize int    --每页记录数
)
as
begin
set nocount on;
declare @timediff datetime --耗时
declare @sql nvarchar(500)
SET @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后不支技直接接参数，所以写成了字符串@sql
select datediff(ms,@timediff,GetDate()) as 耗时
set nocount off;
END


create procedure proc_paged_with_selectMax  --利用select top and select max(列)
(
@pageIndex int,  --页索引
@pageSize int    --页记录数
)
as
begin
set nocount on;
declare @timediff datetime
declare @sql nvarchar(500)
SET @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 耗时
set nocount off;
END


create procedure proc_paged_with_Midvar  --利用ID>最大ID值和中间变量
(
@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 耗时
set nocount off;
END


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 t where t.IDRank>@pageSize*@pageIndex and t.IDRank<@pageSize*(@pageIndex+1)
select datediff(ms,@timediff,getdate()) as 耗时
set nocount off;
end

创建大容量测试数据,布布扣,bubuko.com

创建大容量测试数据

标签：数据   数据库   sql   re   ar   c   

原文地址：http://www.cnblogs.com/gossip/p/3806351.html