{"type":"rich","author_url":"https://blog.hatena.ne.jp/HTN20190109/","title":"\u30d2\u30f3\u30c8\u53e5","categories":["DB"],"blog_url":"https://htn20190109.hatenablog.com/","published":"2019-04-06 00:36:17","provider_url":"https://hatena.blog","author_name":"HTN20190109","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fhtn20190109.hatenablog.com%2Fentry%2F2019%2F04%2F06%2F003617\" title=\"\u30d2\u30f3\u30c8\u53e5 - 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>","provider_name":"Hatena Blog","url":"https://htn20190109.hatenablog.com/entry/2019/04/06/003617","version":"1.0","blog_title":"HTN20190109\u306e\u65e5\u8a18","width":"100%","height":"190","image_url":null,"description":"Oracle select /*+ USE_NL(A B) */A.*from tab1 A inner join tab1 Bon A.col1 = B.col1; select /*+ USE_MERGE(A B) */A.*from tab1 A inner join tab1 Bon A.col1 = B.col1; select /*+ USE_HASH(A B) */A.*from tab1 A inner join tab1 Bon A.col1 = B.col1; MySQL SELECT * FROM tab6 USE INDEX (ind61) WHERE col1=1 A\u2026"}