{"image_url":null,"description":"sqlite3\u3060\u3068alter table change column\u307f\u305f\u3044\u306e\u304c\u306a\u3044\u3089\u3057\u3044\u306e\u3067not null\u3068\u304bdefault value\u3092\u5909\u66f4\u3059\u308b\u306e\u3069\u3046\u3059\u308c\u3070\u3044\u3044\u3093\u3060\u308d\u3046\u3068\u601d\u3063\u3066rails\u304c\u3069\u3046\u3057\u3066\u308b\u304b\u898b\u3066\u307f\u305f\u3002 class CreateTodos < ActiveRecord::Migration[5.0] def change create_table :todos do |t| t.string :text t.boolean :completed t.timestamps end end end class UpdateTodos < ActiveRecord::Migration[\u2026","author_url":"https://blog.hatena.ne.jp/hokaccha/","categories":["sqlite3","rails"],"url":"https://hokaccha.hatenablog.com/entry/2016/10/13/205504","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fhokaccha.hatenablog.com%2Fentry%2F2016%2F10%2F13%2F205504\" title=\"sqlite3\u3067\u30ab\u30e9\u30e0\u5b9a\u7fa9\u306e\u5909\u66f4 - hokaccha memo\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","width":"100%","provider_name":"Hatena Blog","title":"sqlite3\u3067\u30ab\u30e9\u30e0\u5b9a\u7fa9\u306e\u5909\u66f4","author_name":"hokaccha","published":"2016-10-13 20:55:04","type":"rich","provider_url":"https://hatena.blog","height":"190","version":"1.0","blog_title":"hokaccha memo","blog_url":"https://hokaccha.hatenablog.com/"}