{"height":"190","type":"rich","published":"2019-08-27 13:49:42","version":"1.0","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/k/kwbtblog/20190627/20190627001546.png","blog_title":"\u65b0\u3057\u3044\u3053\u3068\u306b\u306f\u30a6\u30a7\u30eb\u30ab\u30e0","author_url":"https://blog.hatena.ne.jp/kwbtblog/","title":"SQL\u3067\u30b0\u30eb\u30fc\u30d7\u306e\u6700\u5f8c\u306e\u30ec\u30b3\u30fc\u30c9\u3092\u53d6\u5f97\u3059\u308b\u65b9\u6cd5","blog_url":"https://www.kwbtblog.com/","categories":["Azure","BigQuery","MSSQL","SQL","SQL Database","SQL Server","\u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570","\u30c7\u30fc\u30bf\u5206\u6790","\u5206\u6790\u95a2\u6570"],"author_name":"kwbtblog","width":"100%","description":"\u300c\u30e6\u30fc\u30b6\u30fc\u306e\u30a4\u30d9\u30f3\u30c8\u30ed\u30b0\u3067\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u4e00\u756a\u6700\u5f8c\u306b\u884c\u3063\u305f\u30a4\u30d9\u30f3\u30c8\u3092\u62bd\u51fa\u3059\u308b\u300d\u306a\u3069\u3001 \u30b0\u30eb\u30fc\u30d7\u3067\u5206\u3051\u305f\u30c7\u30fc\u30bf\u306e\u6700\u5f8c\u306e\u30ec\u30b3\u30fc\u30c9\u3092\u53d6\u5f97\u3057\u305f\u3044\u6642\u304c\u3042\u308a\u307e\u3059\u3002 \u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570\u3092\u4f7f\u3046\u3068\u3001\u4e0b\u8a18\u306e\u3088\u3046\u306a\u5f62\u3067\u6c42\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 WITH tbl AS ( SELECT * ,ROW_NUMBER() OVER( PARTITION BY user_id ORDER BY event_time DESC ) AS row_num FROM event_log ) SELECT * FROM tbl WHERE row_num=1 \u300cPARTITION BY\u300d\u3067\u30b0\u30eb\u30fc\u30d7\u5358\u4f4d\u3092\u6307\u5b9a\u3057\u3001\u300cORDER BY\u300d\u3067\u4e26\u3073\u9806\u3092\u2026","provider_name":"Hatena Blog","url":"https://www.kwbtblog.com/entry/2019/08/27/134942","provider_url":"https://hatena.blog","html":""}