SET QUOTED_IDENTIFIER ON
SET ANSI_NULLS ON
GO

CREATE PROCEDURE [dbo].[GetPagingStr]
  @PRESQL VARCHAR(8000),  --前部分语句，SELECT内容
  @SUFSQL VARCHAR(8000),  --后部分语句，从FROM开始
  @SQL VARCHAR(8000) OUTPUT, --完整分页语句
  @PageSize int,
  @PageNum int,
  @RecordCount int OUTPUT
   
WITH ENCRYPTION
AS

IF @PageSize>0 AND @PageNum>0 --需要分页
BEGIN
--执行SQL
SELECT @SQL=@PRESQL + @SUFSQL + ') as PageTable where row_num between (' + CONVERT(VARCHAR(8),@PageNum) + '-1)*' + CONVERT(VARCHAR(8),@PageSize) + '+1 and ' + CONVERT(VARCHAR(8),@PageSize) + '*' + CONVERT(VARCHAR(8),@PageNum)
END
ELSE
BEGIN--不需要分页
SELECT @SQL=@PRESQL + @SUFSQL + ') as PageTable'
END

--记录总数
DECLARE @COUSQL NVARCHAR(1000)--总条数SQL
SELECT @COUSQL='SELECT @RecordCount=(select count(*) ' + @SUFSQL + ')'
execute SP_EXECUTESQL @COUSQL,N'@RecordCount int output',@RecordCount OUT
GO