sql server分頁存儲過程
阿新 • • 發佈:2017-07-28
order span exe 存儲 數據 reat 過大 where 排序類
因項目需要,一次性查詢出來的數據過大,內存hold不住,所以特意寫成分頁查詢,減小占用內存。
存儲過程如下:
USE [XXX] GO SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO CREATE PROCEDURE [dbo].[GetDataPage] -- 獲得某一頁的數據 -- @currPage int = 1, --當前頁頁碼 (即Top currPage) @showColumn varchar(2000) = ‘*‘, --需要得到的字段 (即 column1,column2,......) @tabNamevarchar(2000), --需要查看的表名 (即 from table_name) @strCondition varchar(2000) = ‘‘, --查詢條件 (即 where condition......) 不用加where關鍵字 @ascColumn varchar(100) = ‘‘, --排序的字段名 (即 order by column asc/desc) @bitOrderType bit = 0, --排序的類型 (0為升序,1為降序) @pkColumn varchar(50) = ‘‘, --主鍵名稱 @pageSize int = 20 --分頁大小AS BEGIN -- 存儲過程開始 -- 該存儲過程需要用到的幾個變量 -- DECLARE @strTemp varchar(1000); DECLARE @strSql varchar(4000); --該存儲過程最後執行的語句 DECLARE @strOrderType varchar(1000); --排序類型語句 (order by column asc或者order by column desc) IF @bitOrderType = 1 -- bitOrderType=1即執行降序 BEGIN SET @strOrderType = ‘ ORDER BY ‘+@ascColumn+‘ DESC‘ SET @strTemp = ‘<(SELECT min‘ END ELSE BEGIN SET @strOrderType = ‘ ORDER BY ‘+@ascColumn+‘ ASC‘ SET @strTemp = ‘>(SELECT max‘ END IF @currPage = 1 -- 如果是第一頁 BEGIN IF @strCondition != ‘‘ SET @strSql = ‘SELECT TOP ‘+STR(@pageSize)+‘ ‘+@showColumn+‘ FROM ‘+@tabName+ ‘ WHERE ‘+@strCondition+@strOrderType ELSE SET @strSql = ‘SELECT TOP ‘+STR(@pageSize)+‘ ‘+@showColumn+‘ FROM ‘+@tabName+@strOrderType END ELSE -- 其他頁 BEGIN IF @strCondition !=‘‘ SET @strSql = ‘SELECT TOP ‘+STR(@pageSize)+‘ ‘+@showColumn+‘ FROM ‘+@tabName+ ‘ WHERE ‘+@strCondition+‘ AND ‘+@pkColumn+@strTemp+‘(‘+@pkColumn+‘)‘+‘ FROM (SELECT TOP ‘+STR((@currPage-1)*@pageSize)+ ‘ ‘+@pkColumn+‘ FROM ‘+@tabName+‘ WHERE ‘+@strCondition+@strOrderType+‘) AS TabTemp)‘+@strOrderType ELSE SET @strSql = ‘SELECT TOP ‘+STR(@pageSize)+‘ ‘+@showColumn+‘ FROM ‘+@tabName+ ‘ WHERE ‘+@pkColumn+@strTemp+‘(‘+@pkColumn+‘)‘+‘ FROM (SELECT TOP ‘+STR((@currPage-1)*@pageSize)+‘ ‘+@pkColumn+ ‘ FROM ‘+@tabName+@strOrderType+‘) AS TabTemp)‘+@strOrderType END EXEC (@strSql) END -- 存儲過程結束 ------------------------------------------------ GO
在網上找資料時看見用ROWNUMBER分頁效率會更高,但是在測試過程中發現每頁所取的數據匯總時有問題,具體什麽引起的也沒找到原因。【郁悶( ˇ?ˇ )】,
不過還是貼上代碼,如果有一樣情況的可以交流交流。
USE [XXX] GO SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO ALTER PROCEDURE [dbo].[GetDataPage] -- 獲得某一頁的數據 -- @currPage int = 1, --當前頁頁碼 (即Top currPage) @showColumn varchar(2000) = ‘*‘, --需要得到的字段 (即 column1,column2,......) @tabName varchar(2000), --需要查看的表名 (即 from table_name) @strCondition varchar(2000) = ‘‘, --查詢條件 (即 where condition......) 不用加where關鍵字 @ascColumn varchar(100) = ‘‘, --排序的字段名 (即 order by column asc/desc) @bitOrderType bit = 0, --排序的類型 (0為升序,1為降序) @pageSize int = 20 --分頁大小 AS BEGIN -- 存儲過程開始 -- 該存儲過程需要用到的幾個變量 -- DECLARE @strSql varchar(4000) --該存儲過程最後執行的語句 DECLARE @strOrderType varchar(1000) --排序類型語句 (order by column asc或者order by column desc) IF @bitOrderType = 1 -- bitOrderType=1即執行降序 BEGIN SET @strOrderType = ‘ ORDER BY ‘+@ascColumn+‘ DESC‘ END ELSE BEGIN SET @strOrderType = ‘ ORDER BY ‘+@ascColumn+‘ ASC‘ END IF @currPage = 1 -- 如果是第一頁 BEGIN IF @strCondition != ‘‘ SET @strSql = ‘SELECT TOP ‘+STR(@pageSize)+‘ ‘+@showColumn+‘ FROM ‘+@tabName+ ‘ WHERE ‘+@strCondition+@strOrderType ELSE SET @strSql = ‘SELECT TOP ‘+STR(@pageSize)+‘ ‘+@showColumn+‘ FROM ‘+@tabName+@strOrderType END ELSE -- 其他頁 BEGIN IF @strCondition !=‘‘ set @strSql=‘SELECT TOP ‘+STR(@pageSize)+‘ ‘+@showColumn+ ‘ FROM ( SELECT ROW_NUMBER() OVER (‘+@strOrderType+‘) AS RowNumber,‘ +@showColumn+‘ FROM ‘+@tabName +‘ WHERE ‘+@strCondition+‘) AS A WHERE RowNumber > ‘+ STR(@pageSize*(@currPage-1)) else set @strSql=‘SELECT TOP ‘+STR(@pageSize)+‘ ‘+@showColumn+ ‘ FROM ( SELECT ROW_NUMBER() OVER (‘+@strOrderType+‘) AS RowNumber,‘ +@showColumn+‘ FROM ‘+@tabName +‘ ‘+‘) AS A WHERE RowNumber > ‘+STR(@pageSize*(@currPage-1)) END EXEC (@strSql) END -- 存儲過程結束 ------------------------------------------------
sql server分頁存儲過程