{"description":"\u30e9\u30f3\u30c0\u30e0\u306b\uff12\uff10\u4ef6\u306e\u30c7\u30fc\u30bf\u3092\u62bd\u51fa\u3059\u308b\u306b\u306f SELECT * FROM {table\u540d} ORDER BY RAND() LIMIT 20; \u3067\u66f8\u3051\u308b\u3002 \u30e9\u30f3\u30c0\u30e0\u95a2\u6570\u306fMySQL\u3067\u306fRAND()\u3067Postgres\u3067\u306fRANDOM()\u3067\u66f8\u3051\u308b\u3002\u3051\u3069\u5148\u8f29\u306b\u805e\u3044\u305f\u8a71\u3060\u3068\u3001SQL\u306e\u30e9\u30f3\u30c0\u30e0\u306f\u9045\u3044\u3089\u3057\u3044\u306e\u3067\u3001\u666e\u901a\u306bPHP\u306a\u3069\u306b\u30e9\u30f3\u30c0\u30e0\u3092\u66f8\u3044\u3066\u305d\u308c\u3092\u5b9f\u884c\u3057\u305f\u65b9\u304c\u3044\u3044\u3089\u3057\u3044\u3067\u3059\u3002\u8ffd\u8a18 \u8abf\u3079\u305f\u3089 * \u3092\u4f7f\u3063\u3066\u3044\u308b\u306e\u304cRAND()\u306e\u9045\u3044\u539f\u56e0\u3089\u3057\u3044\u3002 MySQL\u3067SQL\u306e\u307f\u3092\u4f7f\u7528\u3057\u3066\u30e9\u30f3\u30c0\u30e0\u53d6\u5f97\u3092\u5287\u7684\u306b\u65e9\u304f\u3059\u308b\u65b9\u6cd5 - \u50d5\u306e\u30b9\u30b9\u30e1\u3002","provider_name":"Hatena Blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fmask.hatenadiary.com%2Fentry%2F2014%2F07%2F01%2F095748\" title=\"SQL\u3067\u30e9\u30f3\u30c0\u30e0\u306b\u62bd\u51fa - \u304f\u308f\u3053\u306epermission denied.\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","title":"SQL\u3067\u30e9\u30f3\u30c0\u30e0\u306b\u62bd\u51fa","image_url":null,"provider_url":"https://hatena.blog","version":"1.0","height":"190","categories":["PostgreSQL","MySQL"],"type":"rich","url":"https://mask.hatenadiary.com/entry/2014/07/01/095748","author_name":"mask0702","blog_title":"\u304f\u308f\u3053\u306epermission denied.","published":"2014-07-01 09:57:48","width":"100%","author_url":"https://blog.hatena.ne.jp/mask0702/","blog_url":"https://mask.hatenadiary.com/"}