{"image_url":null,"type":"rich","width":"100%","blog_title":"rhitomi\u2019s diary","categories":[],"published":"2021-04-08 11:00:48","url":"https://rhitomi.hatenablog.com/entry/2021/04/08/110048","blog_url":"https://rhitomi.hatenablog.com/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Frhitomi.hatenablog.com%2Fentry%2F2021%2F04%2F08%2F110048\" title=\"\u30ab\u30e9\u30e0\u306e\u7a2e\u985e - rhitomi\u2019s diary\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_name":"Hatena Blog","author_name":"rhitomi","provider_url":"https://hatena.blog","height":"190","title":"\u30ab\u30e9\u30e0\u306e\u7a2e\u985e","version":"1.0","author_url":"https://blog.hatena.ne.jp/rhitomi/","description":"\u30ab\u30e9\u30e0\u4e00\u89a7\u8868 \u30fbprimary_key\uff1a\u30d7\u30e9\u30a4\u30de\u30ea\u30ad\u30fc \u30fbstring\uff1a\u6587\u5b57\u5217\uff081\u301c255\u6587\u5b57\uff09 \u30fbtext\uff1a\u9577\u3044\u6587\u5b57\u5217\uff081\u301c4294967296\u6587\u5b57\uff09 \u30fbinteger\uff1a\u6574\u6570\uff084\u30d0\u30a4\u30c8\uff09(active_hash\u3067\u5b9f\u88c5\u4e88\u5b9a\u306e\u5834\u5408\u306b\u3082\u3001\u4f7f\u3046) \u30fbbigint\uff1a\u6574\u6570\uff088\u30d0\u30a4\u30c8\uff09 \u30fbfloat\uff1a\u6d6e\u52d5\u5c0f\u6570 \u30fbdecimal\uff1a\u7cbe\u5ea6\u306e\u9ad8\u3044\u5c11\u6570 \u30fbnumeric\uff1a\u6570\u5024 \u30fbdatetime\uff1a\u65e5\u6642 \u30fbtimestamp\uff1a\u66f4\u65b0\u6642\u9593 \u30fbtime\uff1a\u6642\u9593 \u30fbdate\uff1a\u65e5\u4ed8 (\u8a95\u751f\u65e5\u3001\u5e74\u3001\u6708\u3001\u65e5\u307e\u3068\u3081\u3066\u53d6\u5f97) t.date :birthday, null: false \u30fbbinary\uff1a\u30d0\u30a4\u30ca\u30ea\u30fc\u30c7\u30fc\u30bf \u30fbboolean\uff1a\u2026"}