{"provider_url":"https://hatena.blog","published":"2012-04-01 00:00:00","description":"\u7a4f\u3084\u304b\u306a\u663c\u4e0b\u304c\u308a\u306bMySQL\u3067\u5c0f\u6570\u306e\u8db3\u3057\u7b97\u3092\u3057\u3066\u3044\u305f\u3068\u3053\u308d\u3001\u4e0d\u601d\u8b70\u306a\u73fe\u8c61\u3092\u898b\u3064\u3051\u307e\u3057\u305f\u3002 mysql> select 0.8=0.7+0.1; +-------------+ | 0.8=0.7+0.1 | +-------------+ | 1 | +-------------+ 1 row in set (0.00 sec) mysql> select 0.8=0.7+0.1e0; +---------------+ | 0.8=0.7+0.1e0 | +---------------+ | 0 | +---------------+ 1 row in set (0.00 sec) mys\u2026","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fhnw.hatenablog.com%2Fentry%2F20120401\" title=\"MySQL5.1\u4ee5\u964d\u306e\u5c0f\u6570\u306e\u6271\u3044\u304c\u30ad\u30e2\u3044 - hnw\u306e\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>","image_url":null,"version":"1.0","type":"rich","title":"MySQL5.1\u4ee5\u964d\u306e\u5c0f\u6570\u306e\u6271\u3044\u304c\u30ad\u30e2\u3044","blog_url":"https://hnw.hatenablog.com/","width":"100%","provider_name":"Hatena Blog","author_name":"hnw","blog_title":"hnw\u306e\u65e5\u8a18","categories":["\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570","MySQL"],"author_url":"https://blog.hatena.ne.jp/hnw/","url":"https://hnw.hatenablog.com/entry/20120401","height":"190"}