{"provider_name":"Hatena Blog","url":"https://blog.jhashimoto.net/entry/20111021/1319348441","height":"190","published":"2011-10-21 14:40:41","author_url":"https://blog.hatena.ne.jp/JHashimoto/","width":"100%","version":"1.0","blog_url":"https://blog.jhashimoto.net/","title":"Null\u30c1\u30a7\u30c3\u30af\u3068DBMS\u306eNull\u30c1\u30a7\u30c3\u30af\u3092\u884c\u3046\u62e1\u5f35\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3059\u308b","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fblog.jhashimoto.net%2Fentry%2F20111021%2F1319348441\" title=\"Null\u30c1\u30a7\u30c3\u30af\u3068DBMS\u306eNull\u30c1\u30a7\u30c3\u30af\u3092\u884c\u3046\u62e1\u5f35\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3059\u308b - Architect&#39;s Log\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_url":"https://hatena.blog","author_name":"JHashimoto","description":"Null\u30c1\u30a7\u30c3\u30af\u3068DBNull\u30c1\u30a7\u30c3\u30af\u3092\u884c\u3046\u62e1\u5f35\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002 \u3069\u3046\u3044\u3046\u3053\u3068\uff1f Null\u3068DBMS\u306eNull\u3092\u540c\u7b49\u306b\u30c1\u30a7\u30c3\u30af\u3057\u305f\u3044\u30b1\u30fc\u30b9\u306f\u591a\u3005\u3042\u308a\u307e\u3059\u3002\u305d\u3093\u306a\u3068\u304d\u306e\u305f\u3081\u306b\u62e1\u5f35\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3057\u3066\u304a\u304f\u3068\u4fbf\u5229\u3067\u3059\u3002 \u3069\u3046\u3059\u308c\u3070\uff1f using System; namespace Extensions { public static class SystemExtensions { /// <summary> /// \u6307\u5b9a\u3055\u308c\u305f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c null \u307e\u305f\u306f <see cref=\"System.DBNull\"/> \u3067\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u793a\u3057\u307e\u3059\u3002 /// </summary> /// <param \u2026","type":"rich","categories":[".NET","\u62e1\u5f35\u30e1\u30bd\u30c3\u30c9"],"blog_title":"Architect's Log","image_url":null}