{"provider_name":"Hatena Blog","width":"100%","author_name":"ayaketan","blog_url":"https://ayaketan.hatenablog.com/","blog_title":"ayaketan\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u52c9\u5f37\u65e5\u8a18","version":"1.0","published":"2013-04-08 20:24:17","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fayaketan.hatenablog.com%2Fentry%2F2013%2F04%2F08%2F202417\" title=\"\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u8ffd\u52a0 - ayaketan\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u52c9\u5f37\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","height":"190","author_url":"https://blog.hatena.ne.jp/ayaketan/","image_url":null,"title":"\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u8ffd\u52a0","categories":["Ruby"],"description":"\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u8ffd\u52a0\u3057\u305f\u306e\u3067\u3001\u30e1\u30e2\u3002\u30b3\u30de\u30f3\u30c9\u30d7\u30ed\u30f3\u30d7\u30c8\u3067\u30de\u30a4\u30b0\u30ec\u30fc\u30b7\u30e7\u30f3\u30d5\u30a1\u30a4\u30eb\u3092\u4f5c\u6210\u3059\u308b\u3002 rails g migration AddIndexToTable \u203bAddIndexToTable\u306f\u4efb\u610f\u306e\u30d5\u30a1\u30a4\u30eb\u540d\\db\\migration\u306b20130408??????_add_index_to_table\u306e\u3088\u3046\u306b\u65e5\u4ed8\u7b49\u304c\u5148\u982d\u306e\u6307\u5b9a\u3057\u305f\u30d5\u30a1\u30a4\u30eb\u540d\u306e\u30d5\u30a1\u30a4\u30eb\u304c\u3067\u304d\u308b\u306e\u3067\u3001\u3053\u306e\u30d5\u30a1\u30a4\u30eb\u306b\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u8ffd\u8a18\u3059\u308b\u30021\u3064\u306e\u5217\u306b\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u8ffd\u52a0\u3059\u308b\u3068\u304d class AddIndexToTable < ActiveRecord::Migration def up add_index :table\u2026","provider_url":"https://hatena.blog","url":"https://ayaketan.hatenablog.com/entry/2013/04/08/202417","type":"rich"}