回答編集履歴
1
間違い
answer
CHANGED
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@@ -1,4 +1,4 @@
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1
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-
もし、`priority`が`NOT NULL`な
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1
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+
もし、`priority`が`NOT NULL`でなければ、
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2
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```sql
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3
3
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UPDATE `vegetable` SET `priority` = NULL WHERE `id` = 1;
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4
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UPDATE `vegetable` SET `priority` = NULL WHERE `id` = 2;
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