我有一个包含两列Item
、Qty
的表,另一个包含Product
、Quantity
的表。
表A
项目 | |
---|---|
a | 10 |
a | 15 |
a | 5 |
b | 10 |
您需要某种顺序来保证结果的一致性。为了模拟这一点,我添加了IDENTITY列
基于ROW_NUMBER((将产品与订单中的物品匹配
DROP TABLE IF EXISTS #Table1
DROP TABLE IF EXISTS #Table2
CREATE TABLE #Table1 (ID INT IDENTITY(1,1),Item CHAR(1),Qty INT)
CREATE TABLE #Table2 (ID INT IDENTITY(1,1),Product CHAR(1),Qty INT)
INSERT INTO #Table1
VALUES ('a',10)
,('a',15)
,('a',5)
,('b',10)
INSERT INTO #Table2
VALUES ('a',10)
,('a',20)
,('b',5)
,('b',5)
;WITH cte_Table1 AS (
SELECT *,RankNum = ROW_NUMBER() OVER (PARTITION BY Item ORDER BY ID)
FROM #Table1
),
cte_Table2 AS (
SELECT *,RankNum = ROW_NUMBER() OVER (PARTITION BY Product ORDER BY ID)
FROM #Table2
)
SELECT *
FROM cte_Table1 AS A
FULL JOIN cte_Table2 AS B
ON A.Item = B.Product
AND A.RankNum = B.RankNum