{"height":"190","author_name":"utgwkk","url":"https://blog.utgw.net/entry/2020/10/23/205131","categories":["\u6280\u8853"],"description":"\u304a\u3082\u3057\u308d\u304b\u3063\u305f\u306e\u3067\u30e1\u30e2\u3002 CREATE TABLE `tbl` ( `id` BIGINT UNSIGNED NOT NULL, `done` BOOLEAN NOT NULL DEFAULT FALSE, PRIMARY KEY (`id`), KEY `done_and_id` (`done`, `id`) ); tbl \u30c6\u30fc\u30d6\u30eb\u306b done = FALSE \u3067100\u4e07\u884cINSERT\u3057\u3066\u304a\u304f SELECT id FROM tbl WHERE done = FALSE ORDER BY id ASC LIMIT 50 \u3067id\u3092\u9806\u306b\u96c6\u3081\u308b \u51e6\u7406\u3059\u308b UPDATE tbl SET done = \u2026","published":"2020-10-23 20:51:31","blog_title":"\u79c1\u304c\u6b4c\u5ddd\u3067\u3059","type":"rich","version":"1.0","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/u/utgwkk/20201023/20201023205014.png","provider_name":"Hatena Blog","provider_url":"https://hatena.blog","blog_url":"https://blog.utgw.net/","title":"MySQL\u306eEXPLAIN\u304c\u76f4\u611f\u3068\u306f\u7570\u306a\u3063\u3066\u3044\u305f\u4e8b\u4f8b","width":"100%","author_url":"https://blog.hatena.ne.jp/utgwkk/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fblog.utgw.net%2Fentry%2F2020%2F10%2F23%2F205131\" title=\"MySQL\u306eEXPLAIN\u304c\u76f4\u611f\u3068\u306f\u7570\u306a\u3063\u3066\u3044\u305f\u4e8b\u4f8b - \u79c1\u304c\u6b4c\u5ddd\u3067\u3059\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>"}