{"blog_url":"https://www.shigemk2.com/","provider_url":"https://hatena.blog","published":"2018-10-02 21:11:12","author_url":"https://blog.hatena.ne.jp/shigemk2/","categories":["Presto"],"url":"https://www.shigemk2.com/entry/2018/10/02/211112","image_url":null,"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.shigemk2.com%2Fentry%2F2018%2F10%2F02%2F211112\" title=\"memo Presto LEFT OUTER JOIN - 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>","version":"1.0","provider_name":"Hatena Blog","blog_title":"by shigemk2","height":"190","width":"100%","description":"LEFT OUTER JOIN\u306eON\u6761\u4ef6\u3067\u8907\u6570\u30de\u30c3\u30c1\u3057\u305f\u3068\u304d\u306f\u3001\u639b\u3051\u7b97\u306b\u306a\u308b\u3002\u4e0b\u306e\u3088\u3046\u306a\u30af\u30a8\u30ea\u304c\u3042\u3063\u305f\u3068\u3057\u3066\u3001id\u3067\u5916\u90e8\u7d50\u5408\u3057\u3088\u3046\u3068\u3057\u3066\u3044\u308b\u3051\u3069\u3001id\u304c\u305d\u308c\u305e\u308c2\u3064\u3042\u308b\u306e\u3067\u3001id=1\u306b\u3064\u3044\u3066\u306f 2 * 2 \u30674\u3064\u306e\u7d44\u307f\u5408\u308f\u305b\u304c\u3067\u304d\u308b\u3002 SELECT * FROM ( SELECT id, name, age FROM ( VALUES (1, 'alpha', 10), (1, 'alpha', 10), (2, 'beta', 20)) AS t (id, name, age)) a LEFT OUTER JOIN ( SELECT DISTINCT id, name, country FR\u2026","title":"memo Presto LEFT OUTER JOIN","type":"rich","author_name":"shigemk2"}