根据列拆分行并粘贴到不同的表

Question

我有一张这样的桌子。每次订单完成时都会填充表格。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，将上述内容拆分为两个新表，如下所示：

表 1

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

表 2

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

我已按照建议尝试使用 DISTINCT 命令；

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

返回错误；

子查询返回超过 1 个值。当子查询跟随 =、!=、、>= 或子查询用作表达式时，这是不允许的。

如果脚本可以跟踪已处理的行以避免每次运行时重复，那将是锦上添花。

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，我仍将您的主表视为子表，您必须从中创建 Header 表。够了。我的意思是你的表可以是我的 TChilds 表，键可以是 OrderId + Plant。 （我不知道这张表里的植物是什么意思）