{"published":"2005-08-10 01:49:30","author_url":"https://blog.hatena.ne.jp/Hotei/","height":"190","description":"\u6280\u8853\u7684\u306b\u306f\u3001\u30d7\u30e9\u30a4\u30de\u30ea\u30ad\u30fc\u5236\u7d04\u306f\u5358\u7d14\u306b\u4e00\u610f\u6027\u5236\u7d04\u3068\u975eNULL\u5236\u7d04\u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u3082\u306e\u3067\u3059\u3002\u3064\u307e\u308a\u3001\u6b21\u306e2\u3064\u306e\u30c6\u30fc\u30d6\u30eb\u5b9a\u7fa9\u306f\u540c\u3058\u30c7\u30fc\u30bf\u3092\u53d7\u3051\u5165\u308c\u307e\u3059\u3002 CREATE TABLE products ( product_no integer UNIQUE NOT NULL, name text, price numeric );CREATE TABLE products ( product_no integer PRIMARY KEY, name text, price numeric );\u30d7\u30e9\u30a4\u30de\u30ea\u30ad\u30fc\u3067\u3082\u8907\u6570\u306e\u5217\u3092\u5236\u7d04\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u3001\u305d\u306e\u69cb\u6587\u306f\u4e00\u610f\u6027\u5236\u7d04\u306b\u4f3c\u3066\u3044\u307e\u3059\u3002 CREATE TABLE e\u2026","image_url":null,"version":"1.0","width":"100%","blog_url":"https://hotei.hatenadiary.org/","url":"https://hotei.hatenadiary.org/entry/20050810/1123692570","author_name":"Hotei","type":"rich","categories":["PostgreSQL"],"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fhotei.hatenadiary.org%2Fentry%2F20050810%2F1123692570\" title=\"\u30c6\u30fc\u30d6\u30eb\u64cd\u4f5c \u30d7\u30e9\u30a4\u30de\u30ea\u30ad\u30fc\u5236\u7d04 - \u30b7\u30b4\u30c8\u30e1\u30e2\" 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","title":"\u30c6\u30fc\u30d6\u30eb\u64cd\u4f5c \u30d7\u30e9\u30a4\u30de\u30ea\u30ad\u30fc\u5236\u7d04","provider_url":"https://hatena.blog","blog_title":"\u30b7\u30b4\u30c8\u30e1\u30e2"}