{"blog_title":"Hello Tech","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/h/hello-tech/20250514/20250514194356.png","categories":[],"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftech.hello.ai%2Fentry%2F2025%2F05%2F15%2F140732\" title=\"NOT EXISTS\u3092\u4f7f\u3063\u3066\u30af\u30a8\u30ea\u309230\u500d\u901f\u304f\u3057\u305f\u8a71 - Hello Tech\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2025-05-15 14:07:32","author_name":"hello-tech","title":"NOT EXISTS\u3092\u4f7f\u3063\u3066\u30af\u30a8\u30ea\u309230\u500d\u901f\u304f\u3057\u305f\u8a71","blog_url":"https://tech.hello.ai/","provider_url":"https://hatena.blog","version":"1.0","type":"rich","description":"\u30cf\u30ed\u30fc\u306e@satoakick\u3067\u3059\u3002 \u666e\u6bb5\u306fRespo\u3068\u3044\u3046\u98f2\u98df\u5e97\u5411\u3051\u696d\u52d9\u652f\u63f4Saas\u306e\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u3092\u62c5\u5f53\u3057\u3066\u3044\u307e\u3059\u3002 Respo\u306f\u3001\u4e88\u7d04\u7ba1\u7406\u3001\u30bb\u30eb\u30d5\u30aa\u30fc\u30c0\u30fc\u3001POS\u30ec\u30b8\u3001\u30c6\u30a4\u30af\u30a2\u30a6\u30c8\u5bfe\u5fdc\u306a\u3069\u3001\u98f2\u98df\u5e97\u306e\u696d\u52d9\u52b9\u7387\u5316\u3092\u652f\u63f4\u3059\u308b\u591a\u6a5f\u80fd\u306a\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3067\u3059\u3002 PostgreSQL\u306a\u3069\u306eRDBMS\u3092\u4f7f\u3063\u3066\u30b5\u30fc\u30d3\u30b9\u3092\u904b\u7528\u3057\u3066\u3044\u308b\u3068\u3001\u601d\u3044\u3082\u3088\u3089\u306a\u3044\u30af\u30a8\u30ea\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u52a3\u5316\u306b\u906d\u9047\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002 \u4eca\u56de\u306f\u305d\u306e\u4e2d\u3067\u3082\u300cLEFT JOIN + IS NULL\u300d\u69cb\u6587\u306e\u843d\u3068\u3057\u7a74\u3068\u3001 NOT EXISTS\u306b\u3088\u308b\u5287\u7684\u306a\u6539\u5584\u4e8b\u4f8b\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002 DB\u306e\u76e3\u8996 \u30cf\u30ed\u30fc\u3067\u306fDB\u306e\u72b6\u614b\u3092GCP\u306e\u30a2\u30e9\u30fc\u30c8\u30dd\u30ea\u30b7\u30fc\u3067\u7570\u5e38\u691c\u77e5\u3084\u9694\u9031\u3067\u2026","url":"https://tech.hello.ai/entry/2025/05/15/140732","author_url":"https://blog.hatena.ne.jp/hello-tech/","provider_name":"Hatena Blog","height":"190","width":"100%"}