{"author_url":"https://blog.hatena.ne.jp/HTN20190109/","title":"\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u30a2\u30af\u30bb\u30b93\u7a2e","image_url":null,"blog_url":"https://htn20190109.hatenablog.com/","description":"MySQL (8.0.22) \u901a\u5e38\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u30b9\u30ad\u30e3\u30f3\u2192type=const or ref or range \u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u30aa\u30f3\u30ea\u30fc\u30b9\u30ad\u30e3\u30f3\u2192extra=Using index \u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u30d5\u30eb\u30b9\u30ad\u30e3\u30f3\u2192type=index drop table tab1; create table tab1(col1 int, col2 int, col3 int, col4 int); alter table tab1 add constraint tab1pk primary key(col1); drop procedure proc1;delimiter //create procedure pro\u2026","version":"1.0","url":"https://htn20190109.hatenablog.com/entry/2021/04/07/220115","type":"rich","provider_url":"https://hatena.blog","blog_title":"HTN20190109\u306e\u65e5\u8a18","categories":["DB"],"height":"190","provider_name":"Hatena Blog","width":"100%","published":"2021-04-07 22:01:15","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fhtn20190109.hatenablog.com%2Fentry%2F2021%2F04%2F07%2F220115\" title=\"\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u30a2\u30af\u30bb\u30b93\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>","author_name":"HTN20190109"}