C#中常用的分页存储过程

表中主键必须为标识列，[ID] int IDENTITY (1,1)//每次自增一 1.分页方案一：(利用Not In和SELECT TOP分页) 语句形式： SELECT TOP 10 * FROM TestTable WHERE (ID NOT IN (SELECT TOP 20 id FROM TestTable ORDER BY id)) ORDER BY ID
SELECT TOP 页大小 * FROM TestTable WHERE (ID NOT IN (SELECT TOP 页大小*页数 id FROM 表 ORDER BY id)) ORDER BY ID 2.分页方案二：(利用ID大于多少和SELECT TOP分页） 语句形式： 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 页大小 * FROM TestTable WHERE (ID > (SELECT MAX(id) FROM (SELECT TOP 页大小*页数 id FROM 表 ORDER BY id) AS T)) ORDER BY ID 3.分页方案三：(利用SQL的游标存储过程分页)
create procedure SqlPager @sqlstr nvarchar(4000), --查询字符串 @currentpage int, --第N页 @pagesize int --每页行数 as set nocount on declare @P1 int, --P1是游标的id @rowcount int exec sp_cursoropen @P1 output,@sqlstr,@scrollopt=1,@ccopt=1, @rowcount=@rowcount output select ceiling(1.0*@rowcount/@pagesize) as 总页数--,@rowcount as 总行数,@currentpage as 当前页 set @currentpage=(@currentpage-1)*@pagesize+1 exec sp_cursorfetch @P1,16,@currentpage,@pagesize exec sp_cursorclose @P1 set nocount off 4.CREATE Procedure FramWorkPage @TableName varchar(50), --表名 @Fields varchar(5000) = '*', --字段名(全部字段为*) @OrderField varchar(5000), --排序字段(必须!支持多字段) @sqlWhere varchar(5000) = Null,--条件语句(不用加where) @pageSize int, --每页多少条记录 @pageIndex int = 1 , --指定当前为第几页 @TotalPage int output, --返回条数 @OrderType bit -- 设置排序类型,1 升序 0 值则降序 as begin declare @strOrder varchar(400) -- 排序类型
Begin Tran --开始事务 Declare @sql nvarchar(4000); Declare @totalRecord int; --计算总记录数 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--计算总记录数
--计算总页数
select @TotalPage=@totalRecord --CEILING((@totalRecord+0.0)/@PageSize)
if @OrderType = 0 begin set @strOrder = ' order by [' + @OrderField +'] desc' --如果@OrderType是0，就执行降序，这句很重要！ 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 else set @sql = 'Select * FROM (select ROW_NUMBER() Over( '+@strOrder+' ) as rowId,' + @Fields + ' from ' + @TableName + ' where ' + @SqlWhere --处理页数超出范围情况 if @PageIndex<=0 Set @pageIndex = 1
if @pageIndex>@TotalPage Set @pageIndex = @TotalPage
--处理开始点和结束点 Declare @StartRecord int Declare @EndRecord int
set @StartRecord = (@pageIndex-1)*@PageSize + 1 set @EndRecord = @StartRecord + @pageSize - 1
if @OrderType = 0 begin set @strOrder = ' order by rowid desc' --如果@OrderType是0，就执行降序，这句很重要！ end else begin set @strOrder = ' order by rowid asc' end --继续合成sql语句 set @Sql = @Sql + ') as ' + @TableName + ' where rowId between ' + Convert(varchar(50),@StartRecord) + ' and ' + Convert(varchar(50),@EndRecord) + ' '+@strOrder -- print @sql Exec(@Sql) --------------------------------------------------- If @@Error <> 0 Begin RollBack Tran Return -1 End Else Begin Commit Tran Return @totalRecord ---返回记录总数 End end