C#中常用的分頁存儲過程小結
2024-09-07 17:05:26
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表中主鍵必須為標識列，[ID] int IDENTITY (1,1)//每次自增一
1.分頁方案一：(利用Not In和SELECT TOP分頁)
語句形式：
代碼如下:
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 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：
代碼如下:
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 id
FROM 表
ORDER BY id) AS T))
ORDER BY ID
3.分頁方案三：(利用SQL的游標存儲過程分頁)
代碼如下:
create procedure SqlPager
@sqlstr nvarchar(4000), --查詢字符串
@currentpage int, --第N頁
@pagesize int --每頁行數
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--,@rowcount as 總行數,@currentpage as 當前頁
set @currentpage=(@currentpage-1)*@pagesize+1
exec sp_cursorfetch @P1,16,@currentpage,@pagesize
exec sp_cursorclose @P1
set nocount off
4.
代碼如下:
CREATE Procedure FramWorkPage
@TableName varchar(50), --表名
@Fields varchar(5000) = '*', --字段名(全部字段為*)
@OrderField varchar(5000), --排序字段(必須!支持多字段)
@sqlWhere varchar(5000) = Null,--條件語句(不用加where)
@pageSize int, --每頁多少條記錄
@pageIndex int = 1 , --指定當前為第幾頁
@TotalPage int output, --返回條數
@OrderType bit -- 設置排序類型,1 升序 0 值則降序
as
begin
declare @strOrder varchar(400) -- 排序類型
Begin Tran --開始事務
Declare @sql nvarchar(4000);
Declare @totalRecord int;
--計算總記錄數
if (@SqlWhere ='''' or @SqlWhere='' or @sqlWhere is NULL)
set @sql = 'select @totalRecord = count(*) from ' + @TableName
else
set @sql = 'select @totalRecord = count(*) from ' + @TableName + ' where ' + @sqlWhere
EXEC sp_executesql @sql,N'@totalRecord int OUTPUT',@totalRecord OUTPUT--計算總記錄數
--計算總頁數
select @TotalPage=@totalRecord --CEILING((@totalRecord+0.0)/@PageSize)
if @OrderType = 0
begin
set @strOrder = ' order by [' + @OrderField +'] desc'
--如果@OrderType是0，就執行降序，這句很重要！
end
else
begin
set @strOrder = ' order by [' + @OrderField +'] asc'
end
if (@SqlWhere ='''' or @SqlWhere='' or @sqlWhere is NULL)
set @sql = 'Select * FROM (select ROW_NUMBER() Over( '+@strOrder+' ) as rowId,' + @Fields + ' from ' + @TableName
