{"blog_title":"\u51fa\u5411\u4e2d\u306eSE\u306e\u96d1\u8a18\u5e33","title":"\u3044\u3051\u3066\u308bNULL\u30c1\u30a7\u30c3\u30af","blog_url":"https://ippon1ttoku.hatenadiary.org/","image_url":null,"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fippon1ttoku.hatenadiary.org%2Fentry%2F20111013%2F1318519708\" title=\"\u3044\u3051\u3066\u308bNULL\u30c1\u30a7\u30c3\u30af - \u51fa\u5411\u4e2d\u306eSE\u306e\u96d1\u8a18\u5e33\" 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","categories":["\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0"],"version":"1.0","description":"\u4f8b\u3048\u3070\u3001\u53d6\u5f97\u3057\u305f\u30c7\u30fc\u30bf\u3092\u753b\u9762\u306b\u8868\u793a\u3059\u308b\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304c\u3042\u3063\u305f\u5834\u5408\u3002 DB\u304b\u3089\u53d6\u5f97\u3057\u305f\u30c7\u30fc\u30bf\u304c\u300cNULL\u300d\u3060\u3063\u305f\u3068\u304d\u306e\u753b\u9762\u8868\u793a\u306e\u51e6\u7406\u3067\u4f55\u3082\u8003\u616e\u305b\u305a\u306b\u3001string.Format\u306a\u3093\u3066\u3059\u308b\u3068\u7570\u5e38\u7d42\u4e86\u3057\u3066\u3057\u307e\u3046\u3002 \u3067\u3082\u3001string.Format\u306f\u3057\u306a\u304f\u3066\u306f\u306a\u3089\u306a\u3044\u3002 \u3053\u3093\u306a\u3068\u304d\u306e\u3044\u3051\u3066\u308bNULL\u30c1\u30a7\u30c3\u30af\uff1fNULL\u5bfe\u5fdc\uff1f\u8ab0\u304b\u6559\u3048\u3066\u304f\u3060\u3055\u3044\u3002\u306f\u3058\u3081SQL\u5074\u306b\u5bfe\u5fdc\u5165\u308c\u3088\u3046\u3068\u601d\u3063\u3066\u3001ISNULL\u4f7f\u3063\u3066\u3001ISNULL(\u30ab\u30e9\u30e0\u540d,'') \u307f\u305f\u3044\u306a\u611f\u3058\u3067\u7a7a\u6587\u5b57\u306b\u5909\u63db\u3057\u3066\u304b\u3089\u3084\u308d\u3046\u3068\u3057\u305f\u3093\u3060\u3051\u3069\u3001int\u3068\u304bdecimal\u306b\u306f\u7a7a\u6587\u5b57\u5165\u3089\u306a\u3044\u3063\u3066\u3053\u3068\u306b\u6c17\u3065\u3044\u3066\u3001\u3053\u308c\u306f\u4f7f\u3048\u306a\u3044\u3002\u3068\u306a\u3063\u305f\u3002 \u3068\u3044\u3046\u3053\u3068\u306f\u3001\u3084\u3063\u3071str\u2026","url":"https://ippon1ttoku.hatenadiary.org/entry/20111013/1318519708","provider_name":"Hatena Blog","author_url":"https://blog.hatena.ne.jp/ippon1ttoku/","provider_url":"https://hatena.blog","published":"2011-10-13 00:28:28","author_name":"ippon1ttoku","width":"100%","type":"rich"}