{"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fhtn20190109.hatenablog.com%2Fentry%2F2019%2F05%2F06%2F160515\" title=\"\u30ab\u30e9\u30e0\u8ffd\u52a0\u30fb\u5909\u66f4\u30fb\u524a\u9664 - 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_url":"https://hatena.blog","height":"190","version":"1.0","provider_name":"Hatena Blog","blog_url":"https://htn20190109.hatenablog.com/","author_name":"HTN20190109","categories":["DB"],"url":"https://htn20190109.hatenablog.com/entry/2019/05/06/160515","width":"100%","title":"\u30ab\u30e9\u30e0\u8ffd\u52a0\u30fb\u5909\u66f4\u30fb\u524a\u9664","type":"rich","published":"2019-05-06 16:05:15","description":"Oracle (19c)drop table tab1 purge;create table tab1(col1 int);alter table tab1 add(col2 varchar2(10));alter table tab1 modify(col2 varchar2(100));alter table tab1 drop(col2); drop table tab2 purge;create table tab2(col1 int);alter table tab2 add(col2 varchar2(10),col3 varchar2(10));alter table tab2 \u2026","author_url":"https://blog.hatena.ne.jp/HTN20190109/","blog_title":"HTN20190109\u306e\u65e5\u8a18","image_url":null}