{"width":"100%","author_url":"https://blog.hatena.ne.jp/HTN20190109/","blog_url":"https://htn20190109.hatenablog.com/","categories":["DB"],"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fhtn20190109.hatenablog.com%2Fentry%2F2019%2F07%2F06%2F140217\" title=\"\u5b9f\u884c\u8a08\u753b\u5404\u7a2e - 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>","type":"rich","url":"https://htn20190109.hatenablog.com/entry/2019/07/06/140217","title":"\u5b9f\u884c\u8a08\u753b\u5404\u7a2e","published":"2019-07-06 14:02:17","blog_title":"HTN20190109\u306e\u65e5\u8a18","provider_name":"Hatena Blog","height":"190","author_name":"HTN20190109","version":"1.0","provider_url":"https://hatena.blog","image_url":null,"description":"Oracle (12cR1)drop table tab1;drop table tab2; create table tab1(col1 int,col2 int);create table tab2(col1 int,col2 int); create unique index ind11 on tab1(col1);create unique index ind12 on tab1(col2); create index ind21 on tab2(col1);create index ind22 on tab2(col2); alter table tab1 add constrain\u2026"}