{"url":"https://tgk.hatenadiary.org/entry/20060724/1153712918","height":"190","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftgk.hatenadiary.org%2Fentry%2F20060724%2F1153712918\" title=\"\u4f7f\u3048\u308bO/R\u30de\u30c3\u30d1\u30fc\u306e\u898b\u5206\u3051\u65b9 - \u6975\u5317\u30c7\u30fc\u30bf\u30e2\u30c7\u30ea\u30f3\u30b0\" 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","description":"SQL\u4ee5\u5916\u76f4\u3055\u306a\u304f\u3066\u3044\u3044\u306f\u305a\u306a\u306e\u306b \u67d0\u30d5\u30a1\u30df\u30ec\u30b9\u306e\u696d\u52d9\u30b7\u30b9\u30c6\u30e0\u306f\u3053\u3093\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u3092\u6301\u3063\u3066\u3044\u305f\u3002 \u5546\u54c1\u30de\u30b9\u30bf = { \u5546\u54c1ID(PK), \u5546\u54c1\u540d, \u5358\u4fa1 } \u30e1\u30cb\u30e5\u30fc\u30de\u30b9\u30bf = { \u30e1\u30cb\u30e5\u30fcID(PK), \u30e1\u30cb\u30e5\u30fc\u540d } \u30e1\u30cb\u30e5\u30fc\u5225\u5546\u54c1 = { \u5546\u54c1ID, \u30e1\u30cb\u30e5\u30fcID } \u30e1\u30cb\u30e5\u30fc\u30de\u30b9\u30bf\u306b\u306f\u3001\u6625\u590f\u79cb\u51ac\u306e\uff14\u7a2e\u985e\u306e\u30e1\u30cb\u30e5\u30fc\u304c\u767b\u9332\u3055\u308c\u3066\u3044\u308b\u3002 \u30e1\u30cb\u30e5\u30fc\u3068\u5546\u54c1\u306e\u95a2\u4fc2\u306f m:n \u3060\u3002 \u3042\u308b\u6642\u3001\u4e00\u90e8\u5546\u54c1\u306e\u5358\u4fa1\u3092\u5b63\u7bc0\u306b\u3088\u3063\u3066\u5909\u52d5\u3055\u305b\u308b\u3053\u3068\u306b\u306a\u3063\u305f\u3002 \u305d\u3053\u3067\u5358\u4fa1\u306e\u7f6e\u304d\u5834\u6240\u3092\u300c\u5546\u54c1\u30de\u30b9\u30bf\u300d\u304b\u3089\u300c\u30e1\u30cb\u30e5\u30fc\u5225\u5546\u54c1\u300d\u306b\u5909\u66f4\u3057\u305f\u3002 \u5546\u54c1\u30de\u30b9\u30bf\u306e\u5358\u4fa1\u306f\u3001\u30e1\u30cb\u30e5\u30fc\u3054\u3068\u306e\u5358\u4fa1\u3092\u5165\u529b\u3059\u308b\u969b\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3068\u3044\u3046\u4f4d\u7f6e\u3065\u3051\u3067\u300c\u6a19\u6e96\u5358\u2026","blog_title":"\u6975\u5317\u30c7\u30fc\u30bf\u30e2\u30c7\u30ea\u30f3\u30b0","blog_url":"https://tgk.hatenadiary.org/","width":"100%","author_url":"https://blog.hatena.ne.jp/tgk/","provider_url":"https://hatena.blog","author_name":"tgk","categories":["O/R\u30de\u30c3\u30d4\u30f3\u30b0"],"type":"rich","version":"1.0","image_url":null,"title":"\u4f7f\u3048\u308bO/R\u30de\u30c3\u30d1\u30fc\u306e\u898b\u5206\u3051\u65b9","published":"2006-07-24 12:48:38"}