回答編集履歴
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改良
test
CHANGED
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@@ -37,3 +37,33 @@
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```
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# 改良版
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```SQL
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select * from ic
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where id in (
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select min(id) from ic
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where (use_date,in_station,out_station,is_request) in (
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select use_date,in_station,out_station,max(is_request) as is_request from ic
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where is_request in (0,1)
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group by use_date,in_station,out_station
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)
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group by use_date,in_station,out_station
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);
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```
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