{"author_url":"https://blog.hatena.ne.jp/BG1/","version":"1.0","title":"\u8907\u6570\u30ab\u30e9\u30e0\u306eGROUP BY","published":"2025-07-21 21:00:00","blog_url":"https://bg1.hatenablog.com/","type":"rich","author_name":"BG1","image_url":null,"provider_url":"https://hatena.blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fbg1.hatenablog.com%2Fentry%2F2025%2F07%2F21%2F210000\" title=\"\u8907\u6570\u30ab\u30e9\u30e0\u306eGROUP BY - \u8eca\u8f2a\u306ex\u767a\u660e ~B.G&#39;s Blog~\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","categories":["PostgreSQL"],"blog_title":"\u8eca\u8f2a\u306ex\u767a\u660e ~B.G's Blog~","provider_name":"Hatena Blog","url":"https://bg1.hatenablog.com/entry/2025/07/21/210000","description":"GROUP BY\u306f\u3001\u8907\u6570\u306e\u30ab\u30e9\u30e0\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u30b0\u30eb\u30fc\u30d7\u5316\u3082\u51fa\u6765\u308b\u30027.2. \u30c6\u30fc\u30d6\u30eb\u5f0f postgresdb1=# SELECT * FROM profile; name | address | age --------+---------+----- Taro | Tokyo | 20 Sato | Tokyo | 20 Miki | Tokyo | 20 Hanako | Tokyo | 30 Keiko | Tokyo | 30 Jiro | Osaka | 20 Sho | Osaka | 20 Aya | Osaka | 20 Ken | Osaka | 30 Mai | Osaka\u2026","width":"100%","height":"190"}