移調在一列到單獨的列行，如果數據是不同的

Question

我的表是：

，我想輸出是：

Answer 1

你可以這樣做，我沒有睾丸希望它會工作;）

create table #Result (
    ID nvarchar(10), 
    [Date] datetime, 
    [DrugIndex] int, 
    Drug1 nvarchar(1000)) 

DECLARE @ID nvarchar(10), 
     @Date datetime, 
     @Drug nvarchar(1000) 
DECLARE crResult CURSOR FOR SELECT ID,[Date],[Drug] FROM tblSource 
OPEN crResult 
FETCH NEXT FROM crResult INTO @ID,@Date,@Drug 
WHILE @@FETCH_STATUS=0 
    BEGIN 
     IF EXISTS(SELECT * FROM #Result WHERE ID=@ID AND [Date]=@Date) 
      BEGIN 
       DECLARE @Index int 
       SET @Index=(SELECT DrugIndex FROM #Result WHERE Id=@Id and [Date]=@Date) 
       SET @Index=@Index+1 
       DECLARE @sqlCmd nvarchar(1024) 
       SET @sqlCmd='ALTER TABLE #Result ADD Drug'+CONVERT(nvarchar(10),@Index)+' nvarchar(1000)' 
       EXECUTE (@sqlCmd) 
       SET @sqlCmd='UPDATE #Result SET [DrugIndex]='+CONVERT(nvarchar(10),@Index)+', [Drug'+CONVERT(nvarchar(10),@Index)+ 
        ']='''+@Drug+''' WHERE ID='+CONVERT(nvarchar(10),@ID)+''' AND [Date]='''+CONVERT(nvarchar(20),@Date)+'''' 
       EXECUTE (@sqlCmd) 
      END 
     ELSE 
      INSERT INTO #Result(ID,[Date],DrugIndex,[Drug1]) VALUES @ID,@Date,1,@Drug 
     FETCH NEXT FROM crResult INTO @ID,@Date,@Drug 
    END 
CLOSE crResult 
DEALLOCATE crResult 

Answer 2

declare @t table (id int, dt date, drug varchar(100)); -- for example only 
insert into @t values 
(1, '20160106', 'a'), 
(1, '20160106', 'b'), 
(1, '20160106', 'c'), 
(1, '20160106', 'd'), 
(1, '20160106', 'e'), 
(1, '20160511', 'a'), 
(1, '20160511', 'c'), 
(1, '20160511', 'd'); 


if object_id('tempdb..#tmp') is not null drop table #tmp; 

select *, 
     row_number() over (partition by dt order by 1/0) as rn 
into #tmp 
from @t; -- put here your table 


declare @cols_drug varchar(4000) = 
stuff(
(select ',' + quotename(cast(rn as varchar(10))) +' as drug' + cast(rn as varchar(10)) as [text()] 
from (select distinct rn from #tmp) t 
order by rn 
for xml path(''), type).value('.[1]', 'varchar(max)'), 1, 1, ''); 

declare @cols_num varchar(4000) = 
stuff(
(select ',' + quotename(cast(rn as varchar(10))) as [text()] 
from (select distinct rn from #tmp) t 
order by rn 
for xml path(''), type).value('.[1]', 'varchar(max)'), 1, 1, ''); 



declare @sql varchar(8000) = 'select id, dt, ' + @cols_drug + 
' from #tmp t pivot (max(drug) for rn in (' + @cols_num + '))p'; 

exec(@sql);