{"description":"MySQL (8.0.22) drop table tab22;create table tab22(col1 int,col2 int);create index ind22 on tab22(col2);alter table tab22 add constraint tab22pk primary key(col1); show create table tab22;show create table tab22rename; -- \u30c6\u30fc\u30d6\u30eb\u540d\u306e\u5909\u66f4alter table tab22 rename to tab22rename;-- \u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u540d\u306e\u5909\u66f4alter table tab22\u2026","author_name":"HTN20190109","height":"190","blog_title":"HTN20190109\u306e\u65e5\u8a18","provider_name":"Hatena Blog","blog_url":"https://htn20190109.hatenablog.com/","author_url":"https://blog.hatena.ne.jp/HTN20190109/","url":"https://htn20190109.hatenablog.com/entry/2019/06/21/193450","published":"2019-06-21 19:34:50","type":"rich","image_url":null,"title":"\u30ea\u30cd\u30fc\u30e0","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fhtn20190109.hatenablog.com%2Fentry%2F2019%2F06%2F21%2F193450\" title=\"\u30ea\u30cd\u30fc\u30e0 - 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>","width":"100%","provider_url":"https://hatena.blog","version":"1.0","categories":["DB"]}