回答編集履歴
1
結果が誤っていたので修正
test
CHANGED
|
@@ -1,3 +1,71 @@
|
|
|
1
|
+
結果が誤っていたのでとりあえず例を満たすSQLです
|
|
2
|
+
|
|
3
|
+
DISTINCTを外すと2,null,nullが2回出てきます
|
|
4
|
+
|
|
5
|
+
|
|
6
|
+
|
|
7
|
+
```SQL
|
|
8
|
+
|
|
9
|
+
SELECT
|
|
10
|
+
|
|
11
|
+
DISTINCT
|
|
12
|
+
|
|
13
|
+
NVL(D.Acode, E.Acode) Acode
|
|
14
|
+
|
|
15
|
+
, NVL(D.Bcode, E.Bcode) Bcode
|
|
16
|
+
|
|
17
|
+
, E.Ccode
|
|
18
|
+
|
|
19
|
+
FROM (
|
|
20
|
+
|
|
21
|
+
SELECT
|
|
22
|
+
|
|
23
|
+
A.Acode
|
|
24
|
+
|
|
25
|
+
, B.Bcode
|
|
26
|
+
|
|
27
|
+
FROM TableA A
|
|
28
|
+
|
|
29
|
+
FULL JOIN TableB B
|
|
30
|
+
|
|
31
|
+
ON A.Acode = B.Acode
|
|
32
|
+
|
|
33
|
+
) D
|
|
34
|
+
|
|
35
|
+
FULL JOIN (
|
|
36
|
+
|
|
37
|
+
SELECT
|
|
38
|
+
|
|
39
|
+
A.Acode
|
|
40
|
+
|
|
41
|
+
, C.Bcode
|
|
42
|
+
|
|
43
|
+
, C.Ccode
|
|
44
|
+
|
|
45
|
+
FROM TableA A
|
|
46
|
+
|
|
47
|
+
FULL JOIN TableC C
|
|
48
|
+
|
|
49
|
+
ON A.Acode = C.Acode
|
|
50
|
+
|
|
51
|
+
) E
|
|
52
|
+
|
|
53
|
+
ON D.Acode = E.Acode
|
|
54
|
+
|
|
55
|
+
AND D.Bcode = E.Bcode
|
|
56
|
+
|
|
57
|
+
|
|
58
|
+
|
|
59
|
+
```
|
|
60
|
+
|
|
61
|
+
---
|
|
62
|
+
|
|
63
|
+
初回の誤回答
|
|
64
|
+
|
|
65
|
+
|
|
66
|
+
|
|
67
|
+
|
|
68
|
+
|
|
1
69
|
こういうことでしょうか？
|
|
2
70
|
|
|
3
71
|
BはAコードを利用したAへの外部結合
|