回答編集履歴
2
訂正
answer
CHANGED
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@@ -2,7 +2,7 @@
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2
2
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```SQL
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3
3
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select *
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4
4
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from (
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5
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-
select *, row_number() over(partition by 顧客番号 order by 最新 desc) as seq
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5
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+
select *, row_number() over(partition by 顧客番号, 番号 order by 最新 desc) as seq
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6
6
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from card
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7
7
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) t1
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8
8
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where seq=1
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1
訂正
answer
CHANGED
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@@ -3,6 +3,7 @@
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3
3
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select *
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4
4
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from (
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5
5
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select *, row_number() over(partition by 顧客番号 order by 最新 desc) as seq
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6
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+
from card
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6
7
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) t1
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7
8
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where seq=1
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8
9
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```
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