回答編集履歴
1
調整
answer
CHANGED
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@@ -3,6 +3,6 @@
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3
3
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from テーブル
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4
4
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group by 項目A
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5
5
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having sum(case 項目B when '赤' then 1 else 0 end)>0
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6
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-
and sum(case 項目B when '青' then 1 else 0 end)=0
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6
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+
and sum(case 項目B when '青' then 1 when '黄' then 1 else 0 end)=0
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7
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-
and sum(case 項目B when '黄' then 1 else 0 end)=0
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8
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-
```
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7
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+
```
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8
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+
※ちょっと効率化
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