回答編集履歴
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追記
test
CHANGED
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@@ -23,3 +23,23 @@
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> END;
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> $$ LANGUAGE plpgsql;
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追記
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--
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質問のSQL自体は、以下の様に簡潔に記述できます。
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```SQL
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select id, data->>'key1' as key1, data->>'key2' as key2 from test1
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except all
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select id, key1, key2 from test2
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order by id
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```
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