根据列拆分行并粘贴到不同的表

Question

我有一个 table 这样的。每次订单完成时都会填充 Table。一份订单可以有一个或多个隔间。

+---------+-------+-------------+------+
| OrderID | Plant | Compartment | Qty  |
+---------+-------+-------------+------+
|      91 |    12 |           1 | 2000 |
|      91 |    12 |           2 | 2000 |
|      91 |    12 |           3 | 2000 |
|      90 |    12 |           1 | 3000 |
|      89 |    12 |           1 | 5000 |
+---------+-------+-------------+------+

请帮助编写一个 SQL 脚本，将上面的内容拆分成两个新的 table，如下所示：

Table 1

+---------+-------+
| OrderID | Plant |
+---------+-------+
|      91 |    12 |
|      90 |    12 |
|      89 |    12 |
+---------+-------+

Table 2

+---------+-------------+------+
| OrderID | Compartment | Qty  |
+---------+-------------+------+
|      91 |           1 | 2000 |
|      91 |           2 | 2000 |
|      91 |           3 | 2000 |
|      90 |           1 | 3000 |
|      89 |           1 | 5000 |
+---------+-------------+------+

我试过按照建议使用 DISTINCT 命令；

SELECT * FROM table 
WHERE [OrderID] = (SELECT DISTINCT OrderID from table where (COMPARTMENT = '1'))

其中returns错误；

子查询返回了 1 个以上的值。当子查询跟在 =、!=、<、<=、>、>= 或子查询用作表达式时，这是不允许的。

如果脚本能够跟踪已经处理过的行，从而避免每次运行时出现重复，那就锦上添花了。

Answer 1

我会这样做：

-- just for debugging, your table is my @table variable table
set nocount on
declare @table table (OrderId int, Plant int, Compartment int, Qty int)

insert into @table values (89, 12, 1, 5000)
insert into @table values (90, 12, 1, 3000)
insert into @table values (91, 12, 3, 2000)
insert into @table values (91, 12, 2, 2000)
insert into @table values (91, 12, 1, 2000)
insert into @table values (91, 12, 2, 3000)

set nocount off 
--select * from @table

-- now here it comes selections:
if (exists (select * 
                 from INFORMATION_SCHEMA.TABLES 
                 where TABLE_SCHEMA = 'dbo' -- or your schema 
                 and TABLE_NAME = 'THeader' -- or your header's table))
    insert into THeader
    select distinct t1.OrderId, t1.Plant 
    from @table t1
    left join THeader t2 on t1.OrderId = t2.OrderId and t1.Plant = t2.Plant
    where t2.OrderId is null
else
    select distinct t1.OrderId, t1.Plant 
    into THeader
    from @table t1
    left join THeader t2 on t1.OrderId = t2.OrderId and t1.Plant = t2.Plant
    where t2.OrderId is null

if (exists (select * 
                 from INFORMATION_SCHEMA.TABLES 
                 where TABLE_SCHEMA = 'dbo' -- or your schema 
                 and TABLE_NAME = 'TChilds' -- or your childs's table))
    insert into TChilds
    select distinct t1.OrderId, t1.Compartment, t1.Qty 
    from @table t1
    left join TChilds t2 on t1.OrderId = t2.OrderId and t1.Compartment = t2.Compartment and t1.Qty = t2.Qty
    where t2.OrderId is null
else
    select distinct t1.OrderId, t1.Compartment, t1.Qty 
    into TChilds
    from @table t1
    left join TChilds t2 on t1.OrderId = t2.OrderId and t1.Compartment = t2.Compartment and t1.Qty = t2.Qty
    where t2.OrderId is null

-- just for debugging
select * from THeader
select * from TChilds

编辑： 即便如此，我还是把你的 master table 看作是一个 child table，你必须从那里创建 Header 的 table。够了。我的意思是你的 Table 可以是我的 TChilds table，key 可以是 OrderId + Plant。（我不知道植物在这table是什么意思）

根据列拆分行并粘贴到不同的表

Split Row and Paste to Different Tables Based on Column

sql

sql-server

split

rows

Table 1

Table 2