{"description":"SQL\u306f\u672c\u5f53\u4fbf\u5229\u306a\u95a2\u6570\u3042\u308a\u307e\u3059\u306d\u3002 \u65e5\u4ed8\u306e\u5f62\u5f0f\u3092\u5909\u66f4\u3057\u305f\u3044\u5834\u5408\u306fDATE_FORMAT()\u3055\u3093\u306b\u304a\u307e\u304b\u305b\u3042\u308c\u3002 SELECT DATE_FORMAT(created, '%Y%m') AS ym, -- yyyymm\u306e\u5f62\u5f0f\u3067\u8868\u793a\u3055\u308c\u308b COUNT(posts.id) AS count FROM posts GROUP BY DATE_FORMAT(created, '%Y%m'); -- grouping\u3067\u3082\u3064\u304b\u3048\u308b\u304a\uff08^\u03c9^ \u8272\u3005\u3067\u304d\u305d\u3046\u3060\u304c\u3001\u76f4\u8fd1\u3067\u306f\u6708\u3067\u3057\u304b\u4f7f\u3063\u305f\u3053\u3068\u304c\u306a\u3044\u306e\u3067\u3001\u305d\u308c\u3092\u30e1\u30e2\u3057\u3066\u304a\u304f\u3002","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Faipacommander.com%2Fentry%2F2015%2F10%2F26%2F023919\" title=\"\u3010SQL\u3011\u65e5\u4ed8\u306e\u5f62\u5f0f\u3092\u5909\u3048\u308b\u3088 DATE_FORMAT()\u3055\u3093 - IT\u306e\u968a\u9577\u306e\u30d6\u30ed\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","blog_url":"https://aipacommander.com/","blog_title":"IT\u306e\u968a\u9577\u306e\u30d6\u30ed\u30b0","title":"\u3010SQL\u3011\u65e5\u4ed8\u306e\u5f62\u5f0f\u3092\u5909\u3048\u308b\u3088 DATE_FORMAT()\u3055\u3093","height":"190","version":"1.0","author_name":"aipacommander","width":"100%","categories":["SQL","MySQL"],"type":"rich","image_url":"http://cdn.mogile.archive.st-hatena.com/v1/image/aipacommander/297789129598967254.gif","published":"2015-10-26 02:39:19","author_url":"https://blog.hatena.ne.jp/aipacommander/","provider_url":"https://hatena.blog","url":"https://aipacommander.com/entry/2015/10/26/023919"}