{"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fhtn20190109.hatenablog.com%2Fentry%2F2019%2F08%2F24%2F103459\" title=\"A-Time - HTN20190109\u306e\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","image_url":null,"categories":["DB"],"width":"100%","published":"2019-08-24 10:34:59","description":"MySQL \u65b9\u6cd5\u306f\u306a\u3044\u6a21\u69d8 Oracle (19c) https://qiita.com/mkyz08/items/ae801345bd3fc9c5f1dc alter session set statistics_level = all; show parameter statistics_level; \u53d6\u5f97\u65b9\u6cd5\uff1astatistics_level\u3092all\u306b\u8a2d\u5b9a\u3059\u308b\u304b gather_plan_statistics \u30d2\u30f3\u30c8\u3092\u4ed8\u4e0e\u3057\u3066SQL\u3092\u5b9f\u884c\u3059\u308b\u3002\u6b21\u306bALLSTATS\u3092\u6307\u5b9a\u3057\u3066DBMS_XPLAN.DISPLAY_CURSOR\u3092\u5b9f\u884c\u3059\u308b\u3002 select count(*) from tab1 T\u2026","version":"1.0","url":"https://htn20190109.hatenablog.com/entry/2019/08/24/103459","provider_url":"https://hatena.blog","title":"A-Time","blog_url":"https://htn20190109.hatenablog.com/","height":"190","author_name":"HTN20190109","blog_title":"HTN20190109\u306e\u65e5\u8a18","author_url":"https://blog.hatena.ne.jp/HTN20190109/","provider_name":"Hatena Blog","type":"rich"}