我有这样的表
OrderNo Item_Description1 Rate1 Quantity1 Item_Description2 Rate2 Quantity2 Item_Description3 Rate3 Quantity3
-------- ------------------ ------ ---------- ------------------ ------ ---------- ------------------ ------ ----------
1001 Laptop 50000 8 Air Conditioner 20000 10 Television 25000 12
1002 Washing Machine 35000 10 Camera 4000 20 Speaker 1500 15
由此我需要创建一个像这样的临时表或表:
OrderNo Item_Description Rate Quantity
-------- ------------------ ------ ----------
1001 Laptop 50000 8
Air Conditioner 20000 10
Television 25000 12
1002 Washing Machine 35000 10
Camera 4000 20
Speaker 1500 15
我有可能在SQL Server中执行此操作吗?
答案 0 :(得分:7)
您还可以使用CROSS APPLY来取消数据的转移:
select t.order_no,
c.item_description,
c.rate,
c.quantity
from yourtable t
cross apply
(
select item_description1, rate1, quantity1 union all
select item_description2, rate2, quantity2 union all
select item_description3, rate3, quantity3
) c (item_description, rate, quantity)
答案 1 :(得分:2)
SELECT * FROM
(select ORDER_NO,ITEM_DESCRIPTION1,RATE1,QUANTITY1FROM TABLE
UNION
select ORDER_NO,ITEM_DESCRIPTION2,RATE2,QUANTITY2 FROM TABLE
UNION
select ORDER_NO,ITEM_DESCRIPTION3,RATE3,QUANTITY3 FROM TABLE)AS A ORDER BY ORDER_NO
答案 2 :(得分:1)
试试这个
SELECT t.*
FROM Table1
OUTER APPLY
(
VALUES
([OrderNo],item_description1, rate1, quantity1),
(NULL, item_description2, rate2, quantity2),
(NULL, item_description3, rate3, quantity3)
) t([OrdNo],item_description, rate, quantity)
或者使用带有NULL的@bluefeet回答
SELECT c.[OrderNo],
c.item_description,
c.rate,
c.quantity
FROM Table1 t
CROSS APPLY
(
SELECT [OrderNo],item_description1, rate1, quantity1 UNION ALL
SELECT NULL, item_description2, rate2, quantity2 UNION ALL
SELECT NULL, item_description3, rate3, quantity3
) c ([OrderNo],item_description, rate, quantity)
答案 3 :(得分:0)
select t.* from
(
select order_No, Item_Description1 as Item_Desription, Rate1 as Rate
from Table
union
select order_No, Item_Description2 as Item_Desription, Rate2 as Rate
from Table
union
select order_No, Item_Description3 as Item_Desription, Rate3 as Rate
from Table
) as t
Order by t.order_No asc
这是我的测试
select t.* from
(select id, apple1 as apple, orange1 as orange
from Test
union all
select id, apple2 as apple, orange2 as orange
from Test
union all
select id, apple3 as apple, orange3 as orange
from Test) as t
order by t.id asc