表中主鍵必須為標識列,[ID] int IDENTITY (1,1)
1.分頁方案一:(利用Not In和SELECT TOP分頁)
語句形式:
SELECT TOP 10 *
FROM TestTable
WHERE (ID NOT IN
(SELECT TOP 20 id
FROM TestTable
ORDER BY id))
ORDER BY ID
SELECT TOP 頁大小 *
FROM TestTable
WHERE (ID NOT IN
(SELECT TOP 頁大小*頁數(shù) id
FROM 表
ORDER BY id))
ORDER BY ID
2.分頁方案二:(利用ID大于多少和SELECT TOP分頁)
語句形式:
SELECT TOP 10 *
FROM TestTable
WHERE (ID >
(SELECT MAX(id)
FROM (SELECT TOP 20 id
FROM TestTable
ORDER BY id) AS T))
ORDER BY ID
SELECT TOP 頁大小 *
FROM TestTable
WHERE (ID >
(SELECT MAX(id)
FROM (SELECT TOP 頁大小*頁數(shù) id
FROM 表
ORDER BY id) AS T))
ORDER BY ID
3.分頁方案三:(利用寧波減肥網(wǎng)站SQL的游標存儲過程分頁)
create procedure SqlPager
@sqlstr nvarchar(4000), --查詢字符串
@currentpage int, --第N頁
@pagesize int --每頁行數(shù)
as
set nocount on
declare @P1 int, --P1是游標的id
@rowcount int
exec sp_cursoropen @P1 output,@sqlstr,@scrollopt=1,@ccopt=1, @rowcount=@rowcount output
select ceiling(1.0*@rowcount/@pagesize) as 總頁數(shù)--,@rowcount as 總行數(shù),@currentpage as 當(dāng)前頁
set @currentpage=(@currentpage-1)*@pagesize+1
exec sp_cursorfetch @P1,16,@currentpage,@pagesize
exec sp_cursorclose @P1
set nocount off
其它的方案:假如沒有主鍵,可以用臨時表,也可以用方案三做,但是效率會低。
建議排名推廣的時候,加上主鍵和索引,查詢效率會進步。
通過SQL 查詢分析器,顯示比較:我的結(jié)論是:
分頁方案二:(利用ID大于多少和SELECT TOP分頁)效率最高,需要拼接SQL語句
分頁方案一:(利用Not In和SELECT TOP分頁) 效率次之,需要拼接SQL語句
分頁方案三:(利用SQL的游標存儲過程分頁) 效率最差,但是最為通用