大数据高效存储过程

create PROCEDURE [dbo].[GetPageDataOut]
(
@tn nvarchar(30),--表名称
@idn nvarchar(20),--表主键名称
@pi int = 1,--当前页数
@ps  int = 7,--每页大小
@rc int output,--总行数(传出参数)
@pc int output--总页数(传出参数)
)
AS
DECLARE @sql NVARCHAR(225),@sqlCount NVARCHAR(225)
SET @sqlCount = 'SELECT @rc=COUNT(['+@idn+']),@pc=CEILING((COUNT('+@idn+')+0.0)/'+ CAST(@ps AS VARCHAR)+') FROM ' + @tn
EXEC SP_EXECUTESQL @sqlCount,N'@rc INT OUTPUT,@pc INT OUTPUT',@rc OUTPUT,@pc OUTPUT

IF @pi = 1
BEGIN
 SET @sql='SELECT TOP '+str(@ps) +' * FROM '+@tn
EXEC(@sql)
END
ELSE
BEGIN
 SET NOCOUNT ON
  DECLARE @PageLowerBound INT,@StartID INT
  SET @PageLowerBound = @ps * (@pi-1)
  IF @PageLowerBound<1
   SET @PageLowerBound=1
  SET ROWCOUNT @PageLowerBound
  SET @sql=N'SELECT  @StartID = ['+@idn+'] FROM '+@tn
  print '@sql='+@sql 
     EXEC sp_executesql @sql,N'@StartID int output',@StartID output
  SET ROWCOUNT 0
  SET @sql='SELECT TOP '+str(@ps) +' * FROM '+@tn+' WHERE ['+@idn+']>'+ str(@StartID)
  EXEC(@sql)
 SET NOCOUNT OFF
END

--测试语句
declare @rc int,@pc int
exec GetPageDataOut 'Ams_Area','ar_id',2,15,@rc output,@pc output
select @rc,@pc