数据分页存储过程

CREATE PROCEDURE [dbo].[Select_page_data_allow_fields_cond]
@allow_fields varchar(100) =" * ",
@DefRecordNum int =20,
@PageNo int =1,
@Where varchar(500) = null
AS
declare @R_end int
declare @S_sql varchar(500)
declare @condition varchar(500)
declare @condition2 varchar(500)

--if rtrim(@Where)!=""
--if rtrim(@Where)!=""

SET @r_end=(@PageNo-1)*@DefRecordNum+1

--正则页码
IF ( CAST(@r_end AS INT)<1)
SET @r_end = 1

SET @Where=rtrim(@Where)
--if not (@Where is null )
if (@Where <>'' )
SET @S_sql="SELECT TOP "+CAST(@DefRecordNum AS CHAR(4)) +space(2)+@allow_fields+" FROM BBSReply WHERE id>=(SELECT MAX(ID) AS r_begin FROM (SELECT TOP "+CAST(@R_end AS CHAR(5))+" ID FROM BBSReply WHERE "+@Where+" ORDER BY ID) airzen) AND "+@Where+" order by id"
ELSE
SET @S_sql="SELECT TOP "+CAST(@DefRecordNum AS CHAR(4)) +space(2)+@allow_fields+" FROM BBSReply WHERE id>=(SELECT MAX(ID) AS r_begin FROM (SELECT TOP "+CAST(@R_end AS CHAR(5))+" ID FROM BBSReply ORDER BY ID) airzen) order by id"

--PRINT @S_sql
EXEC(@S_sql)
GO

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