{"published":"2023-03-10 20:00:00","image_url":null,"provider_url":"https://hatena.blog","width":"100%","blog_title":"No pain, no gain","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkrtchp.hatenablog.com%2Fentry%2F2023%2F03%2F10%2F200000\" title=\"object \u3092NULL\u5224\u5b9a\u3059\u308b - No pain, no gain\" 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","height":"190","version":"1.0","blog_url":"https://krtchp.hatenablog.com/","author_name":"iwc-jp","description":"object \u3092NULL\u5224\u5b9a\u3059\u308b\u306e\u306b\u56f0\u3063\u305f\u3002 \u305f\u3060\u306eObject\u3067\u306f\u306a\u304f NpgsqlDataReader \u3092\u4f7f\u3063\u3066 Postgre\u304b\u3089Data\u3092Get\u3057\u305f\u6642\u306b \u5f53\u8a72\u30ab\u30e9\u30e0\u304cnull\u306a\u306e\u304b\u5426\u304b\u3092\u5224\u5b9a\u3059\u308b\u304c \u5168\u304fnull\u3068\u5224\u5b9a\u3067\u304d\u306a\u304b\u3063\u305f\u3002 \u300c?\u300d\u3092\u4f7f\u3063\u3066\u3084\u308b\u3068 .ToString()\u304c\u30a8\u30e9\u30fc\u306b\u306a\u3089\u306a\u304f\u306a\u3063\u305f\u3002 \u305f\u3060\u5de6\u8fba\u306b\u4ee3\u5165\u3057\u305f\u5909\u6570\u306f \"\" \u306e\u3088\u3046\u3060\u3002 //SQL\u306e\u5b9f\u884cnpg_reader = Class_Npg.Exe_Sql(str_sql); while (npg_reader.Read()){ // NULL\u306a\u3089\u7a7a\u6587\u5b57\u3068\u306a\u308b\u306e\u304b\uff1fvar obj = npg_reader.GetValu\u2026","categories":[],"author_url":"https://blog.hatena.ne.jp/iwc-jp/","title":"object \u3092NULL\u5224\u5b9a\u3059\u308b","url":"https://krtchp.hatenablog.com/entry/2023/03/10/200000","type":"rich"}