{"width":"100%","provider_url":"https://hatena.blog","published":"2015-04-23 12:30:00","blog_title":"\u30bd\u30d5\u30e9\u30dc\u306e\u6280\u8853\u30d6\u30ed\u30b0","height":"190","url":"https://shinsuke789.hatenablog.jp/entry/2015/04/23/123000","categories":["SQL","Oracle"],"author_url":"https://blog.hatena.ne.jp/shinsuke789/","type":"rich","description":"SQL\u95a2\u6570\u300cCOALESCE\u300d\u3067\u30b5\u30d6\u30af\u30a8\u30ea\u3092\u4f7f\u3046\u306b\u306f\u5c11\u3057\u3060\u3051\u5de5\u592b\u304c\u3044\u308b\u3088\u3046\u3067\u3059\u3002\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u306fOracle\u3092\u60f3\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002 COALESCE\u3068\u306f \u5024\u304cNULL\u306e\u5834\u5408\u3001\u4ee3\u66ff\u5024\u3092\u8a2d\u5b9a\u3059\u308bSQL\u95a2\u6570\u3067\u3059\u3002 COALESCE\u306e\u901a\u5e38\u306e\u4f7f\u3044\u65b9 SELECT COALESCE(NULL, 0) AS value FROM dual -- \u7d50\u679c\uff1a0 COALESCE\u3067\u30b5\u30d6\u30af\u30a8\u30ea\u3092\u4f7f\u3046 SELECT COALESCE( SELECT NULL FROM dual , 0) AS value FROM dual -- \u7d50\u679c\uff1aORA-00936: \u5f0f\u304c\u3042\u308a\u307e\u305b\u3093 COALESCE\u3067\u3072\u3068\u5de5\u592b\u3057\u3066\u30b5\u30d6\u30af\u30a8\u30ea\u3092\u4f7f\u3046 \u2026","author_name":"shinsuke789","provider_name":"Hatena Blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fshinsuke789.hatenablog.jp%2Fentry%2F2015%2F04%2F23%2F123000\" title=\"SQL\u95a2\u6570\u300cCOALESCE\u300d\u3067\u30b5\u30d6\u30af\u30a8\u30ea\u3092\u4f7f\u3046\u306b\u306f\u3072\u3068\u5de5\u592b\u304c\u5fc5\u8981 - \u30bd\u30d5\u30e9\u30dc\u306e\u6280\u8853\u30d6\u30ed\u30b0\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","title":"SQL\u95a2\u6570\u300cCOALESCE\u300d\u3067\u30b5\u30d6\u30af\u30a8\u30ea\u3092\u4f7f\u3046\u306b\u306f\u3072\u3068\u5de5\u592b\u304c\u5fc5\u8981","version":"1.0","blog_url":"https://shinsuke789.hatenablog.jp/","image_url":"https://blog.st-hatena.com/images/theme/og-image-1500.gif"}