{"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fhtn20190109.hatenablog.com%2Fentry%2F2019%2F04%2F21%2F004843\" title=\"\u62e1\u5f35\u7d71\u8a08 - 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>","title":"\u62e1\u5f35\u7d71\u8a08","description":"Oracle BEGIN DBMS_STATS.GATHER_TABLE_STATS( 'test','tab2', METHOD_OPT => 'FOR COLUMNS (col1,col2)');END;/ BEGIN DBMS_STATS.GATHER_TABLE_STATS( 'test','tab2', METHOD_OPT => 'FOR COLUMNS (LOWER(col2))');END;/ SELECT * FROM USER_STAT_EXTENSIONS; MySQL \u672a\u5bfe\u5fdc\u306e\u6a21\u69d8 PostgreSQL https://www.postgresql.jp/documen\u2026","provider_name":"Hatena Blog","image_url":null,"categories":["DB"],"provider_url":"https://hatena.blog","author_url":"https://blog.hatena.ne.jp/HTN20190109/","version":"1.0","type":"rich","blog_url":"https://htn20190109.hatenablog.com/","url":"https://htn20190109.hatenablog.com/entry/2019/04/21/004843","published":"2019-04-21 00:48:43","blog_title":"HTN20190109\u306e\u65e5\u8a18","height":"190","author_name":"HTN20190109","width":"100%"}