{"published":"2010-03-31 00:00:00","categories":[".NET"],"url":"https://ladybug.hatenadiary.org/entry/20100331/p1","title":" LinqToSQL\u3001Concat() \u3067 InvalidCastException","author_name":"ladybug","width":"100%","blog_url":"https://ladybug.hatenadiary.org/","version":"1.0","provider_name":"Hatena Blog","author_url":"https://blog.hatena.ne.jp/ladybug/","blog_title":"is BUG Ready ?","description":"\u6a19\u6e96\u5024\u306e\u30ea\u30b9\u30c8\u3068\u3001\u7279\u5225\u306a\u6761\u4ef6\u306b\u5408\u81f4\u3059\u308b\u5834\u5408\u306b\u306e\u307f\u9069\u7528\u3055\u308c\u308b\u5c02\u7528\u5024\u306e\u30ea\u30b9\u30c8\u304c\u3042\u308b\u3002 CREATE TABLE standard_salaries (job DECIMAL NOT NULL, salary DECIMAL NOT NULL) primary key (job) CREATE TABLE special_salaries (rank DECIMAL NOT NULL, job DECIMAL NOT NULL, salary DECIMAL NOT NULL) primary key (rank, job) \u7279\u5225\u306a\u6761\u4ef6\uff08\u3053\u306e\u4f8b\u3067\u306f rank) \u304c NULL \u3092\u8a31\u5bb9\u3057\u306a\u3044\u305f\u3081\u3001\u6a19\u6e96\u5024\u2026","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fladybug.hatenadiary.org%2Fentry%2F20100331%2Fp1\" title=\" LinqToSQL\u3001Concat() \u3067 InvalidCastException - is BUG Ready ?\" 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","provider_url":"https://hatena.blog","type":"rich","image_url":null}