听说用ROW_NUMBER()分页100W条数据翻页只要2-3秒,有时间测试下
--NORTHWND.MDF库
DECLARE @pagenum AS INT, @pagesize AS INT
SET @pagenum = 2
SET @pagesize = 3
SELECT *
FROM (SELECT ROW_NUMBER() OVER(ORDER BY EmployeeID DESC) AS RowNum,
*
FROM Employees) AS Employees
WHERE RowNum BETWEEN (@pagenum-1)*@pagesize+1 AND @pagenum*@pagesize
ORDER BY EmployeeID DESC
DECLARE @pagenum AS INT, @pagesize AS INT
SET @pagenum = 2
SET @pagesize = 3
SELECT *
FROM (SELECT ROW_NUMBER() OVER(ORDER BY EmployeeID DESC) AS RowNum,
*
FROM Employees) AS Employees
WHERE RowNum BETWEEN (@pagenum-1)*@pagesize+1 AND @pagenum*@pagesize
ORDER BY EmployeeID DESC
2009年7月3日 23:30:20 测试
CREATE procedure [dbo].[p_test]
@startIndex int,
@endIndex int,
@docount bit,
@strwhere varchar(20)
as
if(@docount=1)
select count(id) from tb_testtable
else
begin
SET @strwhere = CHAR(34) + CHAR(42) + @strwhere + CHAR(42) + CHAR(34);
with temptbl as (SELECT ROW_NUMBER() OVER (ORDER BY id desc)AS Row, * from tb_testtable where CONTAINS(*, @strwhere))
SELECT * FROM temptbl where Row between @startIndex and @endIndex
end
@startIndex int,
@endIndex int,
@docount bit,
@strwhere varchar(20)
as
if(@docount=1)
select count(id) from tb_testtable
else
begin
SET @strwhere = CHAR(34) + CHAR(42) + @strwhere + CHAR(42) + CHAR(34);
with temptbl as (SELECT ROW_NUMBER() OVER (ORDER BY id desc)AS Row, * from tb_testtable where CONTAINS(*, @strwhere))
SELECT * FROM temptbl where Row between @startIndex and @endIndex
end
全文索引(模糊搜索)测试,共五百万条数据,耗时436毫秒。
begin
set nocount on;
declare @timediff datetime
select @timediff=Getdate()
select count(id) as 总行数 from tb_testtable
exec P_test @startIndex=1,@endIndex=20,@docount=0,@strwhere='爱情'
select datediff(ms,@timediff,GetDate()) as 耗时
set nocount off;
end
/*
总行数
-----------
5000001
id userName userText
----------- -------------------- -----------------------------
5080 admin 人们争执不休的爱情道理只是些没
耗时
-----------
446
*/
set nocount on;
declare @timediff datetime
select @timediff=Getdate()
select count(id) as 总行数 from tb_testtable
exec P_test @startIndex=1,@endIndex=20,@docount=0,@strwhere='爱情'
select datediff(ms,@timediff,GetDate()) as 耗时
set nocount off;
end
/*
总行数
-----------
5000001
id userName userText
----------- -------------------- -----------------------------
5080 admin 人们争执不休的爱情道理只是些没
耗时
-----------
446
*/