最近在做一個幾百萬條數(shù)據(jù)的分頁查詢，研究了各種方案，在本機(jī)上用項(xiàng)目的實(shí)際數(shù)據(jù)庫做測試，測試過程 is very 痛苦，不堪回首ing。現(xiàn)在廢話不多說，直接上結(jié)果，相信這也是大多數(shù)搜索答案的人最愿意看的方式。
CREATE PROCEDURE [dbo].[P_GridViewPager] (
@recordTotal INT OUTPUT, --輸出記錄總數(shù)
@viewName VARCHAR(800), --表名
@fieldName VARCHAR(800) = '*', --查詢字段
@keyName VARCHAR(200) = 'Id', --索引字段
@pageSize INT = 20, --每頁記錄數(shù)
@pageNo INT =1, --當(dāng)前頁
@orderString VARCHAR(200), --排序條件
@whereString VARCHAR(800) = '1=1' --WHERE條件
)
AS
BEGIN
DECLARE @beginRow INT
DECLARE @endRow INT
DECLARE @tempLimit VARCHAR(200)
DECLARE @tempCount NVARCHAR(1000)
DECLARE @tempMain VARCHAR(1000)
--declare @timediff datetime
set nocount on
--select @timediff=getdate() --記錄時間
SET @beginRow = (@pageNo - 1) * @pageSize + 1
SET @endRow = @pageNo * @pageSize
SET @tempLimit = 'rows BETWEEN ' + CAST(@beginRow AS VARCHAR) +' AND '+CAST(@endRow AS VARCHAR)
--輸出參數(shù)為總記錄數(shù)
SET @tempCount = 'SELECT @recordTotal = COUNT(*) FROM (SELECT '+@keyName+' FROM '+@viewName+' WHERE '+@whereString+') AS my_temp'
EXECUTE sp_executesql @tempCount,N'@recordTotal INT OUTPUT',@recordTotal OUTPUT
--主查詢返回結(jié)果集
SET @tempMain = 'SELECT * FROM (SELECT ROW_NUMBER() OVER (order by '+@orderString+') AS rows ,'+@fieldName+' FROM '+@viewName+' WHERE '+@whereString+') AS main_temp WHERE '+@tempLimit
--PRINT @tempMain
EXECUTE (@tempMain)
--select datediff(ms,@timediff,getdate()) as 耗時
set nocount off
END
GO
