質問編集履歴
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File without changes
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@@ -22,7 +22,7 @@
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答えは`projects`のid2になりますが、これをSQL一文で実現しようと思ったとき、
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`select * from projects left outer join project_skills on projects.id = project_skills.project_id where project_skills.skill_id = 2 and project_skills.skill_id = 3`
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で実現すると思ったのですが、結果は`
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で実現すると思ったのですが、結果は`[]`となります。
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`in`を使おうと
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`select * from projects left outer join project_skills on projects.id = project_skills.project_id where project_skills.skill_id in (2 and 3)`
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