{"type":"rich","categories":["MongoDB"],"title":"Aggregation pipeline ","height":"190","provider_name":"Hatena Blog","provider_url":"https://hatena.blog","blog_url":"https://www.shigemk2.com/","width":"100%","description":"MongoDB\u306e\u96c6\u8a08\u64cd\u4f5c\u3067\u3001\u30c7\u30fc\u30bf\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3084\u30ec\u30b3\u30fc\u30c9\u3092\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u3066\u8a08\u7b97\u7d50\u679c\u3092\u8fd4\u3059\u3002SQL\u306b\u4f3c\u3066\u3044\u308b\u3002 db.aggregate() \u3084 db.collection.aggregate() \u306b\u30b9\u30c6\u30fc\u30b8\u3092\u6e21\u3059 \u5404\u30b9\u30c6\u30c3\u30d7\u306f\u3001\u524d\u306e\u30b9\u30c6\u30fc\u30b8\u306e\u7d50\u679c\u3092\u53d7\u3051\u53d6\u308a\u3001\u30c7\u30fc\u30bf\u3092\u3055\u3089\u306b\u51e6\u7406\u3057\u305f\u4e0a\u3067\u3001\u305d\u306e\u30c7\u30fc\u30bf\u3092\u6b21\u306e\u30b9\u30c6\u30fc\u30b8\u3078\u306e\u5165\u529b\u3068\u3057\u3066\u9001\u4fe1\u3059\u308b\u3002\u96c6\u8a08\u51e6\u7406\u3067\u306f\u3001\u30b5\u30fc\u30d0\u30fc\u4e0a\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u5229\u7528\u3067\u304d\u308b\u3002 pronteff.com \u96c6\u8a08\u30d7\u30ed\u30bb\u30b9\u306e\u56f3","blog_title":"by shigemk2","author_name":"shigemk2","version":"1.0","url":"https://www.shigemk2.com/entry/2026/04/08/000521","published":"2026-04-08 00:05:21","author_url":"https://blog.hatena.ne.jp/shigemk2/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.shigemk2.com%2Fentry%2F2026%2F04%2F08%2F000521\" title=\"Aggregation pipeline  - by shigemk2\" 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":"https://cdn-ak.f.st-hatena.com/images/fotolife/s/shigemk2/20260318/20260318190216.png"}