回答編集履歴
3
訂正
test
CHANGED
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@@ -6,7 +6,7 @@
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6
6
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7
7
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FROM (select NUll as dummy) DUAL
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8
8
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9
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-
WHERE NOT EXIST(～)
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9
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+
WHERE NOT EXISTS(～)
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10
10
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11
11
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```
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12
12
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@@ -18,7 +18,7 @@
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18
18
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19
19
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FROM (values(Null)) as DUAL(dummy)
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20
20
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21
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-
WHERE NOT EXIST(～)
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21
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+
WHERE NOT EXISTS(～)
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22
22
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23
23
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```
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24
24
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2
修正&追記
test
CHANGED
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@@ -4,7 +4,7 @@
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4
4
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5
5
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SELECT 'NO DATA'
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6
6
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7
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-
FROM (select NUll) DUAL
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7
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+
FROM (select NUll as dummy) DUAL
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8
8
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9
9
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WHERE NOT EXIST(～)
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10
10
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@@ -21,3 +21,11 @@
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21
21
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WHERE NOT EXIST(～)
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22
22
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23
23
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```
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24
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+
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25
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+
いっそのこと、DUAL表を作る
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26
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+
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27
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+
```SQL
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28
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+
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29
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+
select NUll as dummy into dual
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30
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+
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31
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+
```
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1
追記
test
CHANGED
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@@ -2,10 +2,22 @@
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2
2
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3
3
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```SQL
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4
4
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5
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-
SELECT
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5
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+
SELECT 'NO DATA'
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6
6
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7
7
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FROM (select NUll) DUAL
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8
8
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|
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9
9
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WHERE NOT EXIST(～)
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10
10
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|
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11
11
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```
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12
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+
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13
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+
若しくはValuesで
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|
14
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+
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15
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+
```
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16
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+
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17
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+
SELECT 'NO DATA'
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18
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+
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19
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+
FROM (values(Null)) as DUAL(dummy)
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20
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+
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21
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+
WHERE NOT EXIST(～)
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22
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+
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23
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+
```
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