C#中常用的分页存储过程小结

  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:

  

复制代码 代码如下:

  SELECT TOP 10 *

  FROM TestTable

  WHERE (ID NOT IN

  (SELECT TOP 20 id

  FROM TestTable

  ORDER BY id))

  ORDER BY ID

  SELECT TOP 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:

  

复制代码 代码如下:

  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 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)

  

复制代码 代码如下:

  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.

  

复制代码 代码如下:

  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

  通过上面这些东西的学习。我想一定可以找到一种满意的答案。。。