{"provider_url":"https://hatena.blog","width":"100%","blog_url":"https://htn20190109.hatenablog.com/","author_name":"HTN20190109","type":"rich","categories":["DB"],"url":"https://htn20190109.hatenablog.com/entry/2021/06/21/221059","height":"190","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fhtn20190109.hatenablog.com%2Fentry%2F2021%2F06%2F21%2F221059\" title=\"\u30da\u30fc\u30b8\u6570\u78ba\u8a8d - 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_url":"https://blog.hatena.ne.jp/HTN20190109/","provider_name":"Hatena Blog","title":"\u30da\u30fc\u30b8\u6570\u78ba\u8a8d","version":"1.0","image_url":null,"description":"MySQL (8.0.22)https://gihyo.jp/dev/serial/01/mysql-road-construction-news/0056 drop table tab1;create table tab1(col1 int,col2 varchar(8000)); insert into tab1 values(1,rpad('x',8000,'x') ); select col1,col2,char_length(col2),length(col2) from tab1; analyze table tab1; select database_name,table_nam\u2026","blog_title":"HTN20190109\u306e\u65e5\u8a18","published":"2021-06-21 22:10:59"}