分頁預存程序(增加了選擇欄位列表、排序方式參數)

來源:互聯網
上載者:User

/*
資料庫分頁預存程序,支援倒序和升序
參數說明:
  @tablename:為搜尋表名
  @tablefield:為表的欄位,約定為表的主鍵,
  @where:為搜尋表名,要顯示所有記錄請設為"1=1"
  @orderby:為搜尋結果排序,如order by id desc
  @fieldlist:為欄位列表,如userid, username
  @curpage:當前頁碼
  @page_record:每頁記錄條數
  @Sort:排序標識(如果是倒序排,參數值為desc,為升序,參數值為asc,跟orderby參數是對應的)
結果: 返回表tablename中滿足條件where的第curpage頁的page_record條記錄,結果按orderby排序
*/
Create PROCEDURE proc_CommonPaging

@tablename varchar(100),
@tablefield varchar(20),
@where varchar(5000),
@orderby varchar(500),
@fieldlist varchar(1000),
@curpage int,
@page_record int,
@sort varchar(8)

AS

BEGIN

  DECLARE @cmd varchar(8000)
  DECLARE @uprecord int
  DECLARE @Op varchar(2) -- 操作符
  DECLARE @max_min varchar(4) -- 最大/最小計算

  SET @op = '<'
  SET @max_min = 'MIN'
  IF @sort = 'asc'
      BEGIN
    SET @Op = '>'
            SET @max_min = 'MAX'
      END

  SET @uprecord=@curpage * @page_record
 
  IF @curpage = 0
      SET @cmd = 'Select TOP '+cast(@page_record AS NVARCHAR)+' '+@fieldlist+' FROM '+@tablename+' Where '+@where+' '+@orderby
  ELSE
    SET @cmd = 'Select TOP '+cast(@page_record AS NVARCHAR)+' '+@fieldlist+' FROM '+@tablename+' Where '+@where+' AND '+@tablefield+'
    '+@op+' (Select '+@max_min+'('+@tablefield+')  FROM (Select TOP  '+cast(@uprecord AS NVARCHAR)+' '+@tablefield+' FROM '+@tablename+' Where
    '+@where+' '+@orderby+') AS TmpTbl ) AND '+@where+' '+@orderby

  SET @cmd = @cmd + '; Select COUNT(*) FROM '+@tablename+' Where '+@where

  EXEC(@cmd)
  PRINT(@cmd)

END
GO

FROM: http://www.wu-xin.com/article.asp?id=271

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