SQL - 查询单独列并根据列数据创建新列

对不起，如果标题太可怕了。有一个表T.与列名称，货号，那要么包含我的状态，O，或S.SQL - 查询单独列并根据列数据创建新列

例：

Name Num Status 
Bob 1  I 
Bob 2  O 
Bob 3  O 
John 4  I 
John 5  S 
Joe 6  O

想要的结果看起来像：

Name Num I O S 
Bob 1 x 
Bob 2  x 
Bob 3  X 
John 4 X 
John 5   X

谢谢！

编辑：后续问题。

Name Num I O S 
Bob  1 x 
Bob  1  x 
Bob  2  X

需要的结果是：

Name Num I O S 
Bob  1 X X 
Bob  2  X

编辑2：实际查询：

SELECT Name, Card_Nmbr, 

[Out] = case when d.Status='I' then 'X' else '' end, 
[In] = case when d.Status='O' then 'X' else '' end, 
[Sales] = case when d.Status='S' then 'X' else '' end 
FROM [PCOdb].[dbo].[GC_Header] as h 
INNER JOIN GC_Detail as d on h.GC_TransNmbr = d.GC_TransNmbr 
INNER JOIN GC_Master as m on d.GCM_Nmbr = m.GCM_Nmbr 
INNER JOIN Galaxy1.dbo.GxUsers as u on h.UserID = u.UserID 
WHERE GC_TransDate between '11/29/16' and dateadd(day,1, '11/29/16') 
Group BY Card_Nmbr, Name

来源

2016-11-30 escapeclaws

编辑2：实际查询; – escapeclaws

一个简单的例子声明，就可以在这里

Select Name 
     ,Num 
     ,[I] = case when [Status]='I' then 'X' else '' end 
     ,[O] = case when [Status]='O' then 'X' else '' end 
     ,[S] = case when [Status]='S' then 'X' else '' end 
From YourTable

EDIT to handle multiple rows

Select Name 
     ,Num 
     ,[I] = max(case when [Status]='I' then 'X' else '' end) 
     ,[O] = max(case when [Status]='O' then 'X' else '' end) 
     ,[S] = max(case when [Status]='S' then 'X' else '' end) 
From YourTable 
Group By Name,Num

Edit 2 - Full Query (Assuming the Joins are doing what you need)

SELECT Name 
     ,Card_Nmbr 
     ,[Out] = max(case when d.[Status]='I' then 'X' else '' end) 
     ,[In] = max(case when d.[Status]='O' then 'X' else '' end) 
     ,[Sales] = max(case when d.[Status]='S' then 'X' else '' end) 
FROM [PCOdb].[dbo].[GC_Header] as h 
JOIN GC_Detail as d on h.GC_TransNmbr = d.GC_TransNmbr 
JOIN GC_Master as m on d.GCM_Nmbr = m.GCM_Nmbr 
JOIN Galaxy1.dbo.GxUsers as u on h.UserID = u.UserID 
WHERE GC_TransDate between '2016-11-29' and DateAdd(DD,1,'2016-11-29') 
Group BY Card_Nmbr, Name

来源

2016-11-30 18:39:21

谢谢！我有一个快速跟进;现在可以说Bob有两个项目，Num = 2，其中一个状态为O，一个状态为I.如果我需要显示一列然后像这样：Bob 2 XX（其中有两个X，在I和O之下专栏）再次感谢！ – escapeclaws

@escapeclaws就这样，我清楚，你想让鲍勃有一个与O和我选择的行？ –

是的，我在上面添加了一个用于说明的编辑。再次谢谢你！ – escapeclaws

使用Case表达。

演示：

Create table #temp 
     (Name varchar (10), 
     Num int , 
     [Status] char(1)) 

insert into #temp values ('Bob' , '1' , 'I') 
insert into #temp values ('Bob' , '2' , 'O') 
insert into #temp values ('Bob' , '3' , 'O') 
insert into #temp values ('John' , '4' , 'I') 
insert into #temp values ('John' , '5' ,'S') 
insert into #temp values ('Joe' , '6' , 'O') 



select Name, 
     Num, 
     [I] = case 
       when [Status] ='I' 
       then 'X' 
       else '' 
       end 
     ,[O] = case 
       when [Status] ='O' 
       then 'X' 
       else '' 
       end 
     ,[S] = case when [Status] ='S' 
       then 'X' 
       else '' 
       end 
from #temp 

drop table #temp

结果：

来源

2016-11-30 18:42:23

对于SQL Server 2012和更高版本可以使用IIF (Transact-SQL)功能了。

Select Name 
     ,Num 
     ,IIF([Status] = 'I' , 'X', '') AS [I] 
     ,IIF([Status] = 'O' , 'X', '') AS [O] 
     ,IIF([Status] = 'S' , 'X', '') AS [S] 
FROM TableName

来源

2016-11-30 18:44:46

SQL - 查询单独列并根据列数据创建新列

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