SQL server 2005的簡單分頁程序
SQL2005增加了不少新特性,其中NTILE和ROW_NUMER使得我們不再為SQL如何靈活方便的分頁傷腦筋了(不必再羨慕Oracle等數據庫了)。下面就是一個很簡單的分頁查詢語句: DECLARE @rows_per_page AS INTEGERDECLARE @current_page AS INTEGERDECLARE @total_pages AS INTEGER
-- 設置每頁的行數SET @rows_per_page = 20-- 設置要顯示的頁號(從1開始)SET @current_page = 2-- 計算總頁數SELECT @total_pages = COUNT(*) / @rows_per_pageFROM testtable;
-- 列出指定頁的內容WITH t AS( SELECT NTILE(@total_pages) OVER(ORDER BY id) AS page_number, * FROM testtable)SELECT * from t WHERE page_number = @current_page 程序簡單到可以不用說明的程度。我們可以利用上述簡單的語句,變化排序條件和查詢表,就可以做出一個很通用的分頁查詢的存儲過程或查詢語句了。
同樣的,使用ROW_NUMBER也可以做到分頁查詢: DECLARE @rows_per_page AS INTEGERDECLARE @current_page AS INTEGERDECLARE @start_row_num AS INTEGER
-- 設置每頁的行數SET @rows_per_page = 20-- 設置要顯示的頁號(從1開始)SET @current_page = 2-- 設置開始行號SET @start_row_num = (@current_page - 1) * @rows_per_page
WITH t AS( SELECT ROW_NUMBER() OVER(ORDER BY id) AS row_number, * FROM testtable)SELECT * from t WHERE row_number BETWEEN @start_row_num AND @start_row_num + @rows_per_page似乎更簡單的樣子。
至于哪種效率更高,這需要大家實際測試了。
http://ly4cn.cnblogs.com/archive/2006/07/11/447905.html
