回答編集履歴
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追記
answer
CHANGED
@@ -25,4 +25,16 @@
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on t1.year=t2.year and t1.company=t2.company
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group by company;
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-
```
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```
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# 追記
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該当するレコードをすべてとりだすならこうしてください
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```SQL
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SELECT t1.* from table_a as t1
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INNER JOIN (
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SELECT company,max(year) as year
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from table_a where value IS NOT NULL GROUP BY company
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) as t2
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on t1.year=t2.year and t1.company=t2.company
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WHERE t1.company='A';
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```
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