{"type":"rich","provider_name":"Hatena Blog","version":"1.0","image_url":null,"blog_title":"\u3071\u3068\u968a\u9577\u65e5\u8a8c","url":"https://taityo-diary.hatenablog.jp/entry/2018/04/30/222335","author_name":"pato_taityo","provider_url":"https://hatena.blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftaityo-diary.hatenablog.jp%2Fentry%2F2018%2F04%2F30%2F222335\" title=\"Oracle Database \u306e LNNVL \u3092 PostgreSQL \u3067\u5b9f\u73fe\u3059\u308b - \u3071\u3068\u968a\u9577\u65e5\u8a8c\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_url":"https://taityo-diary.hatenablog.jp/","width":"100%","height":"190","description":"Oracle Database \u306b\u306f LNNVL \u3068\u3044\u3046\u30d5\u30a1\u30f3\u30af\u30b7\u30e7\u30f3\u304c\u3042\u308a\u307e\u3059\u3002 LNNVL(condition) LNNVL \u306e\u8aac\u660e\u3092 Oracle Database 12c R2 \u30de\u30cb\u30e5\u30a2\u30eb\u304b\u3089\u5f15\u7528\u3057\u307e\u3059\u3002 LNNVL\u306f\u3001\u6761\u4ef6\u306e\u30aa\u30da\u30e9\u30f3\u30c9\u306e1\u3064\u307e\u305f\u306f\u4e21\u65b9\u304cNULL\u306e\u53ef\u80fd\u6027\u304c\u3042\u308b\u5834\u5408\u306b\u305d\u306e\u6761\u4ef6\u3092\u7c21\u5358\u306b\u8a55\u4fa1\u3059\u308b\u65b9\u6cd5\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u3053\u306e\u30d5\u30a1\u30f3\u30af\u30b7\u30e7\u30f3\u306f\u554f\u5408\u305b\u306eWHERE\u53e5\u3067\u3001\u307e\u305f\u306fWHEN\u6761\u4ef6\u3068\u3057\u3066\u691c\u7d22CASE\u5f0f\u3067\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u30d5\u30a1\u30f3\u30af\u30b7\u30e7\u30f3\u306f\u3001\u5f15\u6570\u3068\u3057\u3066\u6761\u4ef6\u3092\u53d6\u308a\u3001\u305d\u306e\u6761\u4ef6\u304cFALSE\u307e\u305f\u306fUNKNOWN\u306e\u5834\u5408\u306fTRUE\u3092\u623b\u3057\u3001TRUE\u306e\u5834\u5408\u306fFALSE\u3092\u623b\u3057\u307e\u3059\u3002LNNVL\u306f\u3001\u30b9\u30ab\u30e9\u30fc\u5f0f\u2026","author_url":"https://blog.hatena.ne.jp/pato_taityo/","categories":["\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9","\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0"],"published":"2018-04-30 22:23:35","title":"Oracle Database \u306e LNNVL \u3092 PostgreSQL \u3067\u5b9f\u73fe\u3059\u308b"}