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【转】最通用的分页存储过程SqlServer

CREATE PROCEDURE usp_Generic_Pagination  
    @tblName   varchar(255),       -- 表名   
    @strGetFields varchar(1000) = '*',  -- 需要返回的列 
    @fldName varchar(255)='',      -- 排序的字段名   
    @PageSize   int = 10,          -- 页尺寸 
    @PageIndex  int = 1,           -- 页码  
    @doCount  bit = 0,   -- 返回记录总数, 非 0 值则返回 
    @OrderType bit = 0,  -- 设置排序类型, 非 0 值则降序  
    @strWhere  varchar(1500) = ''  -- 查询条件 (注意: 不要加 where)  
AS  
declare @strSQL   varchar(5000)       -- 主语句  
declare @strTmp   varchar(110)        -- 临时变量  
declare @strOrder varchar(400)        -- 排序类型  
if @doCount != 0  
 begin   
   if @strWhere !=''  
    set @strSQL = 'select count(*) as Total from ['+ @tblName +'] where '+ @strWhere  
   else  
    set @strSQL = 'select count(*) as Total from ['+ @tblName +']' 
 end  
 --以上代码的意思是如果@doCount传递过来的不是0,就执行总数统计。以下的所有代码都 
--是@doCount为0的情况  
 else  
 begin  
 if @OrderType != 0  
     begin  
        set @strTmp = '<(select min'  
        set @strOrder = ' order by ['+ @fldName +'] desc' 
     --如果@OrderType不是0,就执行降序,这句很重要!  
     end  
 else  
    begin  
    set @strTmp = '>(select max' 
    set @strOrder = ' order by ['+ @fldName +'] asc' 
 end  
 
if @PageIndex = 1  
    begin  
        if @strWhere != ''    
            set @strSQL = 'select top ' + str(@PageSize) +' '+@strGetFields+ '   from ['+ @tblName +'] where ' + @strWhere + ' ' + @strOrder  
         else  
             set @strSQL = 'select top ' + str(@PageSize) +' '+@strGetFields+ '   from ['+ @tblName +'] '+ @strOrder  
            --如果是第一页就执行以上代码,这样会加快执行速度  
        end  
    else   
        begin  
        --以下代码赋予了@strSQL以真正执行的SQL代码  
            set @strSQL = 'select top ' + str(@PageSize) +' '+@strGetFields+ '   from [' + @tblName +'] where [' + @fldName + ']' + @strTmp + '(['+ @fldName + '])  
                 from (select top ' + str((@PageIndex-1)*@PageSize) + ' ['+ @fldName + '] from ['+ @tblName +']' + @strOrder + ') as tblTmp)'+ @strOrder  
            if @strWhere != ''  
               set @strSQL = 'select top ' + str(@PageSize) +' '+@strGetFields+ '   from ['+ @tblName +'] where [' + @fldName + ']' + @strTmp + '(['+ @fldName + ']) from (select top ' + str((@PageIndex-1)*@PageSize) + ' ['+ @fldName + ']  
                 from ['+ @tblName +'] where ' + @strWhere + ' ' + @strOrder + ') as tblTmp) and ' + @strWhere + ' ' + @strOrder  
            end  
        end    
 exec ( @strSQL) 
GO 
posted @ 2012-11-08 14:19  Dhoopu  阅读(258)  评论(0编辑  收藏  举报