{"published":"2008-04-06 00:00:27","author_url":"https://blog.hatena.ne.jp/nuc/","width":"100%","title":"MySQL","height":"190","author_name":"nuc","version":"1.0","blog_title":"\u767d\u306e\u30ab\u30d4\u30d0\u30e9\u306e\u9006\u6975\u9650 S.144-3","type":"rich","provider_name":"Hatena Blog","image_url":null,"description":"http://dev.mysql.com/doc/refman/4.1/ja/group-by-functions.html STD(expr) , STDDEV(expr) expr \u306e\u6a19\u6e96\u504f\u5dee\uff08VARIANCE() \u306e\u5e73\u65b9\u6839\uff09\u3092\u8fd4\u3059\u3002\u3053\u308c\u306f SQL-99 \u306b\u5bfe\u3059\u308b\u62e1\u5f35\u3002\u3053\u306e\u95a2\u6570\u306e STDDEV() \u306e\u5f62\u5f0f\u306f Oracle \u3068\u306e\u4e92\u63db\u6027\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306b\u63d0\u4f9b\u3055\u308c\u3066\u3044\u308b\u3002VARIANCE(expr) expr \u306e\u6a19\u6e96\u504f\u5dee\u3092\u8fd4\u3059\uff08\u30ec\u30b3\u30fc\u30c9\u306f\u30b5\u30f3\u30d7\u30eb\u3067\u306f\u306a\u304f\u3001\u6bcd\u96c6\u56e3\u5168\u4f53\u3068\u307f\u306a\u3055\u308c\u308b\u3002\u305d\u306e\u305f\u3081\u3001\u3053\u306e\u95a2\u6570\u306f\u30ec\u30b3\u30fc\u30c9\u6570\u3092\u5206\u6bcd\u3068\u3057\u3066\u53d6\u308b\uff09\u3002\u3053\u308c\u306f SQL-99 \u306b\u5bfe\u3059\u308b\u62e1\u5f35\uff08\u30d0\u30fc\u30b8\u30e7\u30f3 4.1 \u4ee5\u964d\u3067\u4f7f\u7528\u53ef\u80fd\u2026","categories":[],"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fnuc.hatenadiary.org%2Fentry%2F20080406%2Fp28\" title=\"MySQL - \u767d\u306e\u30ab\u30d4\u30d0\u30e9\u306e\u9006\u6975\u9650 S.144-3\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_url":"https://nuc.hatenadiary.org/","url":"https://nuc.hatenadiary.org/entry/20080406/p28","provider_url":"https://hatena.blog"}