sql2000行转列 转过来的测试完也不知那个网站去哪了 没法写出处了

Posted 2020-09-01 SoftWareIe

ALTER procedure dbo.CommonRowToCol  
    @sql nvarchar(4000)  
as   
begin  
--必须包含colname列和result列(不区分大小写),  
--除colname列和result列 其余各列均会作为判别记录唯一性的条件  
--使用时,只需将要作为列名的字段定义为colname,将欲显示的列定义为result即可  
--如select student as 学生 ,course as colname,score result from class  
   
    create table #temp([序号] int IDENTITY(1,1))   
    declare @sqlTemp nvarchar(4000),@sql_select nvarchar(1000),@temp nvarchar(500)  
    declare @sql_All nvarchar(4000),@sql_Table nvarchar(1000),@sql_declare nvarchar(1000),@sql_Fetch nvarchar(1000) ,  
            @sql_id nvarchar(1000),@sql_id2 nvarchar(1000),@sql_insert nvarchar(1000),@sql_value nvarchar(1000)  
   
    set @sql_select = ‘‘ set @sql_All = ‘‘ set @sql_Table =‘‘ set @sql_declare = ‘‘ set @sql_Fetch = ‘‘  
    set @sql_id = ‘‘ set @sql_id2 = ‘‘ set @sql_insert=‘‘ set @sql_value = ‘‘  
      
    set @sql = lower(LTRIM(@sql))  
    set @sqlTemp = @sql  
    set @sqlTemp = ‘ select top 0 * into #tempTbl from (‘+@sqlTemp+‘)z ‘+  
        ‘ select @temp =  Name+‘‘,‘‘[email protected] from ( select top 1111 name from tempdb..syscolumns where id = object_id(N‘‘tempdb..#tempTbl‘‘) order by colorder )z ‘  
    EXECUTE sp_executesql @sqlTemp, N‘@temp nvarchar(1000) output‘,@sql_select output  
   
    while charindex(‘,‘,@sql_select) > 0   
    begin  
        select @temp = lower(LEFT(@sql_select,charindex(‘,‘,@sql_select)-1))  
        select @sql_select = stuff(@sql_select,1,charindex(‘,‘,@sql_select),‘‘)  
          
        if (@temp <> ‘colname‘) and (@temp<>‘result‘)  
        begin  
            set @sql_Table = ‘ [‘+@temp+‘] nvarchar(1000),‘ + @sql_Table       
            set @sql_insert = ‘ [‘+@temp+‘],‘ + @sql_insert       
            set @sql_value =‘isnull(@‘+@temp+‘,‘‘‘‘),‘+@sql_value   
            set @sql_id =  ‘ [‘+@temp+‘] =  isnull(@‘+@temp+‘,‘‘‘‘) and‘ + @sql_id  
            set @sql_id2 = ‘ [‘+@temp+‘] =  isnull(‘‘‘‘‘‘[email protected]‘+@temp+‘+‘‘‘‘‘‘ ,‘‘‘‘‘‘‘‘) and‘ + @sql_id2  
        end;  
        set @sql_declare = ‘ @‘+@temp+‘ nvarchar(1000),‘+@sql_declare   
        set @sql_Fetch = ‘ @‘+@temp+‘,‘+@sql_Fetch   
    end;  
    set @sql_Table = ‘ALTER TABLE #temp ADD ‘ +left(@sql_Table,len(@sql_table)-1)+‘ ‘  
    set @sql_declare = ‘declare @sqlTemp nvarchar(4000),‘ +left(@sql_declare,len(@sql_declare)-1) + ‘ ‘  
    set @sql_Fetch = left(@sql_Fetch,len(@sql_fetch)-1) + ‘ ‘  
    set @sql_id = left(@sql_id,len(@sql_id)-3) + ‘ ‘  
    set @sql_id2 = left(@sql_id2,len(@sql_id2)-3) + ‘ ‘  
    set @sql_insert = left(@sql_insert,len(@sql_insert)-1) + ‘ ‘  
    set @sql_value = left(@sql_value,len(@sql_value)-1) + ‘ ‘  
   
    set @sql_All = @sql_declare +   
            ‘ Declare myCur Cursor   For ‘+ @sql + ‘ Open myCur Fetch NEXT From myCur Into ‘+ @sql_Fetch+  
            ‘ While @@fetch_status=0 Begin ‘+  
            ‘   if not exists(select * from tempdb..syscolumns where id = object_id(N‘‘tempdb..#temp‘‘) and name = @colName)  
                begin              
                    set @sqlTemp =‘‘alter table #temp add [‘‘[email protected]+‘‘] nvarchar(4000) ‘‘  
                    exec(@sqlTemp)  
                end   
                if not exists(select * from #temp where ‘+@sql_id+‘)  
                begin  
                    insert into #temp(‘+@sql_insert+‘) values(‘+@sql_value+‘)  
                end   
                  
                set @sqlTemp =‘‘ update #temp set [‘‘[email protected]+‘‘] = isnull(‘‘‘‘‘‘[email protected]+‘‘‘‘‘‘,‘‘‘‘‘‘‘‘) where ‘ + @sql_id2+‘‘‘   
                exec(@sqlTemp)  
                  
                Fetch NEXT From myCur Into ‘+ @sql_Fetch+  
            ‘end   
            Close myCur   
            Deallocate myCur   
            select * from #temp  
            ‘  
              
    exec (@sql_Table)  
    exec(@sql_All)  
end