下面就是大數據量時提高分頁的效率的測試代碼，分享給大家。
| --提高分頁效率:實現分頁時只讀取顯示數據,需要先在數據庫創建數據庫“TestForPaging”use TestForPaginggo--創建表SomeDatacreate table SomeData(id int primary key,name varchar(30) null,description text)go--插入數據insert into SomeData values(1,'num1','第1條')goinsert into SomeData values(2,'num2','第2條')goinsert into SomeData values(3,'num3','第3條')goinsert into SomeData values(4,'num4','第4條')goinsert into SomeData values(5,'num5','第5條')go--數據條目總數select count(*) from SomeDatago--給每條記錄添加一個數據級別select name,description,ROW_NUMBER() over(order by id desc)as dataLevel from SomeDatago--查看指定的數據級別間的數據條目select dataLevel,name,description from(select name,description,row_number() over(order by id desc)as dataLevel from SomeData) as datawithleverl where dataLevel between 2 and 4go--實現查看指定的數據級別間的數據條目的存儲過程create procedure GetDataPaged(@startRowIndex int,@maximumRows int,@sort varchar)AS--確保指定sortif len(@sort)=0set @sort='id'--帶參數的查詢select dataLevel,name,description from(select name,description,row_number() over(order by @sort desc)as dataLevel from SomeData) AS datawithleverlWHERE dataLevel > (@startRowIndex*10) AND dataLevel <= (@startRowIndex*10 + @maximumRows)go |
以上就是本文的的全部內容，希望對大家的學習有所幫助。
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