回答編集履歴
2
修正
answer
CHANGED
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@@ -10,7 +10,7 @@
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10
10
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```SQL
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11
11
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SELECT ...
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12
12
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, NVL(NUM1, 0) AS NUM1 -- 数値型列
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13
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-
, NVL(
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13
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+
, NVL(CHAR1, ' ') AS CHAR1 -- 文字型列
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14
14
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...
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15
15
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```
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16
16
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などと対応。
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1
追記
answer
CHANGED
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@@ -5,4 +5,12 @@
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5
5
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```SQL
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6
6
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SET NULL NULL
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7
7
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SQL を実行
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8
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-
```
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8
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+
```
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9
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+
NULLが入っている列があれば
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10
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+
```SQL
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11
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+
SELECT ...
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|
12
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+
, NVL(NUM1, 0) AS NUM1 -- 数値型列
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13
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+
, NVL(CHAR, ' ') AS CHAR1 -- 文字型列
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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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+
などと対応。
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