大数据量分页存储过程效率测试附测试代码与结果

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
declare @count int
set @count=1
while @count<=2000000
begin
insert into tb_TestTable(id,userName,userPWD,userEmail) values(@count,’admin’,’admin888′,’lli0077@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)
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)
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 IDWithRowNumber where IDRank>@pageSize*@pageIndex and IDRank<@pageSize*(@pageIndex+1)
select datediff(ms,@timediff,getdate()) as 耗时
set nocount off;
end

create procedure proc_CTE –利用临时表及Row_number
(
@pageIndex int, –页索引
@pageSize int –页记录数
)
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

–/*—–存储过程 分页处理 孙伟 2005-03-28创建 ——-*/
–/*—–存储过程 分页处理 浪尘 2008-9-1修改———-*/
–/*—– 对数据进行了2分处理使查询前半部分数据与查询后半部分数据性能相同 ——-*/

alter PROCEDURE proc_paged_2part_selectMax
(
@tblName nvarchar(200), —-要显示的表或多个表的连接
@fldName nvarchar(500) = ‘*’, —-要显示的字段列表
@pageSize int = 10, —-每页显示的记录个数
@page int = 1, —-要显示那一页的记录
@fldSort nvarchar(200) = null, —-排序字段列表或条件
@Sort bit = 0, —-排序方法，0为升序，1为降序(如果是多字段排列Sort指代最后一个排序字段的排列顺序(最后一个排序字段不加排序标记)–程序传参如：’ SortA Asc,SortB Desc,SortC ‘)
@strCondition nvarchar(1000) = null, —-查询条件,不需where
@ID nvarchar(150), —-主表的主键
@Dist bit = 0, —-是否添加查询字段的 DISTINCT 默认0不添加/1添加
@pageCount int = 1 output, —-查询结果分页后的总页数
@Counts int = 1 output —-查询到的记录数
)
AS
SET NOCOUNT ON
Declare @sqlTmp nvarchar(1000) —-存放动态生成的SQL语句
Declare @strTmp nvarchar(1000) —-存放取得查询结果总数的查询语句
Declare @strID nvarchar(1000) —-存放取得查询开头或结尾ID的查询语句

Declare @strSortType nvarchar(10) —-数据排序规则A
Declare @strFSortType nvarchar(10) —-数据排序规则B

Declare @SqlSelect nvarchar(50) —-对含有DISTINCT的查询进行SQL构造
Declare @SqlCounts nvarchar(50) —-对含有DISTINCT的总数查询进行SQL构造

declare @timediff datetime –耗时测试时间差
select @timediff=getdate()

if @Dist = 0
begin
set @SqlSelect = ‘select ‘
set @SqlCounts = ‘Count(*)’
end
else
begin
set @SqlSelect = ‘select distinct ‘
set @SqlCounts = ‘Count(DISTINCT ‘+@ID+’)’
end

if @Sort=0
begin
set @strFSortType=’ ASC ‘
set @strSortType=’ DESC ‘
end
else
begin
set @strFSortType=’ DESC ‘
set @strSortType=’ ASC ‘
end

——–生成查询语句——–
–此处@strTmp为取得查询结果数量的语句
if @strCondition is null or @strCondition=” –没有设置显示条件
begin
set @sqlTmp = @fldName + ‘ From ‘ + @tblName
set @strTmp = @SqlSelect+’ @Counts=’+@SqlCounts+’ FROM ‘+@tblName
set @strID = ‘ From ‘ + @tblName
end
else
begin
set @sqlTmp = + @fldName + ‘From ‘ + @tblName + ‘ where (1>0) ‘ + @strCondition
set @strTmp = @SqlSelect+’ @Counts=’+@SqlCounts+’ FROM ‘+@tblName + ‘ where (1>0) ‘ + @strCondition
set @strID = ‘ From ‘ + @tblName + ‘ where (1>0) ‘ + @strCondition
end

—-取得查询结果总数量—–
exec sp_executesql @strTmp,N’@Counts int out ‘,@Counts out
declare @tmpCounts int
if @Counts = 0
set @tmpCounts = 1
else
set @tmpCounts = @Counts

–取得分页总数
set @pageCount=(@tmpCounts+@pageSize-1)/@pageSize

/**//**//**//**当前页大于总页数 取最后一页**/
if @page>@pageCount
set @page=@pageCount

–/*—–数据分页2分处理——-*/
declare @pageIndex int –总数/页大小
declare @lastcount int –总数%页大小

set @pageIndex = @tmpCounts/@pageSize
set @lastcount = @tmpCounts%@pageSize
if @lastcount > 0
set @pageIndex = @pageIndex + 1
else
set @lastcount = @pagesize

–//***显示分页
if @strCondition is null or @strCondition=” –没有设置显示条件
begin
if @pageIndex<2 or @page<=@pageIndex / 2 + @pageIndex % 2 –前半部分数据处理
begin
if @page=1
set @strTmp=@SqlSelect+’ top ‘+ CAST(@pageSize as VARCHAR(4))+’ ‘+ @fldName+’ from ‘+@tblName
+’ order by ‘+ @fldSort +’ ‘+ @strFSortType
else
begin
if @Sort=1
begin
set @strTmp=@SqlSelect+’ top ‘+ CAST(@pageSize as VARCHAR(4))+’ ‘+ @fldName+’ from ‘+@tblName
+’ where ‘+@ID+’ <(select min(‘+ @ID +’) from (‘+ @SqlSelect+’ top ‘+ CAST(@pageSize*(@page-1) as Varchar(20)) +’ ‘+ @ID +’ from ‘+@tblName
+’ order by ‘+ @fldSort +’ ‘+ @strFSortType+’) AS TBMinID)’
+’ order by ‘+ @fldSort +’ ‘+ @strFSortType
end
else
begin
set @strTmp=@SqlSelect+’ top ‘+ CAST(@pageSize as VARCHAR(4))+’ ‘+ @fldName+’ from ‘+@tblName
+’ where ‘+@ID+’ >(select max(‘+ @ID +’) from (‘+ @SqlSelect+’ top ‘+ CAST(@pageSize*(@page-1) as Varchar(20)) +’ ‘+ @ID +’ from ‘+@tblName
+’ order by ‘+ @fldSort +’ ‘+ @strFSortType+’) AS TBMinID)’
+’ order by ‘+ @fldSort +’ ‘+ @strFSortType
end
end
end
else
begin
set @page = @pageIndex-@page+1 –后半部分数据处理
if @page <= 1 –最后一页数据显示
set @strTmp=@SqlSelect+’ * from (‘+@SqlSelect+’ top ‘+ CAST(@lastcount as VARCHAR(4))+’ ‘+ @fldName+’ from ‘+@tblName
+’ order by ‘+ @fldSort +’ ‘+ @strSortType+’) AS TempTB’+’ order by ‘+ @fldSort +’ ‘+ @strFSortType
else
if @Sort=1
begin
set @strTmp=@SqlSelect+’ * from (‘+@SqlSelect+’ top ‘+ CAST(@pageSize as VARCHAR(4))+’ ‘+ @fldName+’ from ‘+@tblName
+’ where ‘+@ID+’ >(select max(‘+ @ID +’) from(‘+ @SqlSelect+’ top ‘+ CAST(@pageSize*(@page-2)+@lastcount as Varchar(20)) +’ ‘+ @ID +’ from ‘+@tblName
+’ order by ‘+ @fldSort +’ ‘+ @strSortType+’) AS TBMaxID)’
+’ order by ‘+ @fldSort +’ ‘+ @strSortType+’) AS TempTB’+’ order by ‘+ @fldSort +’ ‘+ @strFSortType
end
else
begin
set @strTmp=@SqlSelect+’ * from (‘+@SqlSelect+’ top ‘+ CAST(@pageSize as VARCHAR(4))+’ ‘+ @fldName+’ from ‘+@tblName
+’ where ‘+@ID+’ <(select min(‘+ @ID +’) from(‘+ @SqlSelect+’ top ‘+ CAST(@pageSize*(@page-2)+@lastcount as Varchar(20)) +’ ‘+ @ID +’ from ‘+@tblName
+’ order by ‘+ @fldSort +’ ‘+ @strSortType+’) AS TBMaxID)’
+’ order by ‘+ @fldSort +’ ‘+ @strSortType+’) AS TempTB’+’ order by ‘+ @fldSort +’ ‘+ @strFSortType
end
end
end

else –有查询条件
begin
if @pageIndex<2 or @page<=@pageIndex / 2 + @pageIndex % 2 –前半部分数据处理
begin
if @page=1
set @strTmp=@SqlSelect+’ top ‘+ CAST(@pageSize as VARCHAR(4))+’ ‘+ @fldName+’ from ‘+@tblName
+’ where 1=1 ‘ + @strCondition + ‘ order by ‘+ @fldSort +’ ‘+ @strFSortType
else if(@Sort=1)
begin
set @strTmp=@SqlSelect+’ top ‘+ CAST(@pageSize as VARCHAR(4))+’ ‘+ @fldName+’ from ‘+@tblName
+’ where ‘+@ID+’ <(select min(‘+ @ID +’) from (‘+ @SqlSelect+’ top ‘+ CAST(@pageSize*(@page-1) as Varchar(20)) +’ ‘+ @ID +’ from ‘+@tblName
+’ where (1=1) ‘ + @strCondition +’ order by ‘+ @fldSort +’ ‘+ @strFSortType+’) AS TBMinID)’
+’ ‘+ @strCondition +’ order by ‘+ @fldSort +’ ‘+ @strFSortType
end
else
begin
set @strTmp=@SqlSelect+’ top ‘+ CAST(@pageSize as VARCHAR(4))+’ ‘+ @fldName+’ from ‘+@tblName
+’ where ‘+@ID+’ >(select max(‘+ @ID +’) from (‘+ @SqlSelect+’ top ‘+ CAST(@pageSize*(@page-1) as Varchar(20)) +’ ‘+ @ID +’ from ‘+@tblName
+’ where (1=1) ‘ + @strCondition +’ order by ‘+ @fldSort +’ ‘+ @strFSortType+’) AS TBMinID)’
+’ ‘+ @strCondition +’ order by ‘+ @fldSort +’ ‘+ @strFSortType
end
end
else
begin
set @page = @pageIndex-@page+1 –后半部分数据处理
if @page <= 1 –最后一页数据显示
set @strTmp=@SqlSelect+’ * from (‘+@SqlSelect+’ top ‘+ CAST(@lastcount as VARCHAR(4))+’ ‘+ @fldName+’ from ‘+@tblName
+’ where (1=1) ‘+ @strCondition +’ order by ‘+ @fldSort +’ ‘+ @strSortType+’) AS TempTB’+’ order by ‘+ @fldSort +’ ‘+ @strFSortType
else if(@Sort=1)
set @strTmp=@SqlSelect+’ * from (‘+@SqlSelect+’ top ‘+ CAST(@pageSize as VARCHAR(4))+’ ‘+ @fldName+’ from ‘+@tblName
+’ where ‘+@ID+’ >(select max(‘+ @ID +’) from(‘+ @SqlSelect+’ top ‘+ CAST(@pageSize*(@page-2)+@lastcount as Varchar(20)) +’ ‘+ @ID +’ from ‘+@tblName
+’ where (1=1) ‘+ @strCondition +’ order by ‘+ @fldSort +’ ‘+ @strSortType+’) AS TBMaxID)’
+’ ‘+ @strCondition+’ order by ‘+ @fldSort +’ ‘+ @strSortType+’) AS TempTB’+’ order by ‘+ @fldSort +’ ‘+ @strFSortType
else
set @strTmp=@SqlSelect+’ * from (‘+@SqlSelect+’ top ‘+ CAST(@pageSize as VARCHAR(4))+’ ‘+ @fldName+’ from ‘+@tblName
+’ where ‘+@ID+’ <(select min(‘+ @ID +’) from(‘+ @SqlSelect+’ top ‘+ CAST(@pageSize*(@page-2)+@lastcount as Varchar(20)) +’ ‘+ @ID +’ from ‘+@tblName
+’ where (1=1) ‘+ @strCondition +’ order by ‘+ @fldSort +’ ‘+ @strSortType+’) AS TBMaxID)’
+’ ‘+ @strCondition+’ order by ‘+ @fldSort +’ ‘+ @strSortType+’) AS TempTB’+’ order by ‘+ @fldSort +’ ‘+ @strFSortType
end
end

——返回查询结果—–
exec sp_executesql @strTmp
select datediff(ms,@timediff,getdate()) as 耗时
–print @strTmp
SET NOCOUNT OFF
GO