{"blog_url":"https://nemoplus.hateblo.jp/","author_name":"yamazaru_rengou","blog_title":"\u306d\u3082\u3077\u3089\u3059","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fnemoplus.hateblo.jp%2Fentry%2F2013%2F02%2F08%2F100658\" title=\"coalesce \u304c\u30de\u30b8\u4fbf\u5229 - \u306d\u3082\u3077\u3089\u3059\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_url":"https://hatena.blog","published":"2013-02-08 10:06:58","author_url":"https://blog.hatena.ne.jp/yamazaru_rengou/","image_url":null,"height":"190","version":"1.0","provider_name":"Hatena Blog","width":"100%","type":"rich","categories":["oracle","postgresql","tips"],"url":"https://nemoplus.hateblo.jp/entry/2013/02/08/100658","title":"coalesce \u304c\u30de\u30b8\u4fbf\u5229","description":"select coalesce(null,1,null,2) from dual \u2193 1 select coalesce(null,null,null,2) from dual \u2193 2 select coalesce(null,null,null,null) from dual \u2193 null \u3067\u3082\u30b9\u30da\u30eb\u304c\u899a\u3048\u3089\u308c\u306a\u3044"}