{"provider_name":"Hatena Blog","blog_title":"\u3081\u3082","description":"\u3084\u308a\u305f\u3044\u3053\u3068 id product_id buy_date 0 a 2011-11-01 1 b 2011-11-03 1 c 2011-11-02 \u304b\u3089 id dates product_history 0 2011-11-01 a 1 2011-11-02_2011-11-03 c_b \u3092\u53d6\u5f97\u3057\u305f\u3044\u3002 \u30b3\u30fc\u30c9 SELECT id, GROUP_CONCAT( STRING(dayofyear_index), '_') as dates, GROUP_CONCAT( product_name , '_') as product_history FROM ( SELECT DAYOFYEAR(\u2026","author_name":"misos","categories":["SQL"],"version":"1.0","width":"100%","author_url":"https://blog.hatena.ne.jp/misos/","title":"BigQuery\u3067GROUP_CONCAT\u3092\u7528\u3044\u3066\u7279\u5b9a\u306e\u30ab\u30e9\u30e0\u3092\u30bd\u30fc\u30c8\u3057\u3066\u307e\u3068\u3081\u3066\u3057\u307e\u3046","published":"2016-10-09 18:19:18","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fpaper.hatenadiary.jp%2Fentry%2F2016%2F10%2F09%2F181918\" title=\"BigQuery\u3067GROUP_CONCAT\u3092\u7528\u3044\u3066\u7279\u5b9a\u306e\u30ab\u30e9\u30e0\u3092\u30bd\u30fc\u30c8\u3057\u3066\u307e\u3068\u3081\u3066\u3057\u307e\u3046 - \u3081\u3082\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","image_url":null,"provider_url":"https://hatena.blog","url":"https://paper.hatenadiary.jp/entry/2016/10/09/181918","blog_url":"https://paper.hatenadiary.jp/","height":"190","type":"rich"}