{"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fakinobu.net%2Fentry%2F2020%2F11%2F08%2F210322\" title=\"Rails ActiveRecord\u3067\u7279\u5b9a\u306e\u30ab\u30e9\u30e0\u306e\u30e6\u30cb\u30fc\u30af\u306a\u914d\u5217\u3092\u53d6\u5f97\u3059\u308b - \u30ce\u30f3\u30ab\u30d5\u30a7\u30a4\u30f3\u3067\u3042\u306a\u305f\u306b\u3084\u3055\u3057\u3044\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_url":"https://akinobu.net/","url":"https://akinobu.net/entry/2020/11/08/210322","author_url":"https://blog.hatena.ne.jp/kuronekopunk/","published":"2020-11-08 21:03:22","blog_title":"\u30ce\u30f3\u30ab\u30d5\u30a7\u30a4\u30f3\u3067\u3042\u306a\u305f\u306b\u3084\u3055\u3057\u3044","categories":["Rails"],"image_url":null,"author_name":"kuronekopunk","type":"rich","height":"190","width":"100%","provider_url":"https://hatena.blog","title":"Rails ActiveRecord\u3067\u7279\u5b9a\u306e\u30ab\u30e9\u30e0\u306e\u30e6\u30cb\u30fc\u30af\u306a\u914d\u5217\u3092\u53d6\u5f97\u3059\u308b","provider_name":"Hatena Blog","version":"1.0","description":"\u4f8b\u3048\u3070 created_on \u306b\u65e5\u4ed8\u304c\u5165\u3063\u3066\u3044\u308b\u3053\u3093\u306a\u30c7\u30fc\u30bf Post.last Post Load (13.1ms) SELECT \"posts\".* FROM \"posts\" => #<Post id: 1, user_id: 1, created_on: \"2020-11-02\"> pluck \u3092\u4f7f\u3046\u3060\u3051\u3060\u3068\u540c\u3058\u65e5\u4ed8\u304c\u5165\u3063\u3066\u3057\u307e\u3046 Post.pluck(:created_on) (2.7ms) SELECT \"posts\".\"created_on\" FROM \"posts\" => [Mon, 02 Nov 2020, Mon, 02 Nov 2020, ...] uniq \u3059\u308b\u3068\u4e00\u610f\u306e\u65e5\u2026"}