從子查詢中選擇沒有重復SQL的值

Question

我有表，其中類型A有兩個值，類型B有兩個值

A    |   B
-----|--------
val1 | val1
val2 | val2

我做子查詢，但我得到了dubolicate值，看起來像這樣

A    |   B
-----|--------
val1 | val1
val1 | val2
val2 | val1
val2 | val2

我的查詢：

SELECT A, B
FROM 
(SELECT DISTINCT title as A
FROM TABLE1 
INNER JOIN TABLE2 ON TABLE1_TABLE2_ID = TABLE2_ID
INNER JOIN TABLE3 ON TABLE1_TABLE3_ID = TABLE3_ID
WHERE TABLE_TABLE3_ID = 2008 AND TABLE_TYP LIKE 'A' AND TABLE1_AKTIV = 'Y')
LEFT JOIN
(SELECT DISTINCT title as B
FROM TABLE1 
INNER JOIN TABLE2 ON TABLE1_TABLE2_ID = TABLE2_ID
INNER JOIN TABLE3 ON TABLE1_TABLE3_ID = TABLE3_ID
WHERE TABLE_TABLE3_ID = 2008 AND TABLE_TYP LIKE 'B' AND TABLE1_AKTIV = 'Y')
ON 1 = 1

您有任何想法，我該如何做而不重復嗎？

Answer 1

問題是ON 1=1 。 這將為您提供所有組合。 您需要使用適當的引用列更改查詢，例如ON A.id=B.id