{"type":"rich","title":" \u9023\u756a\u66f4\u65b0","published":"2022-10-26 19:23:42","version":"1.0","categories":["DB"],"height":"190","author_url":"https://blog.hatena.ne.jp/HTN20190109/","url":"https://htn20190109.hatenablog.com/entry/2022/10/26/192342","image_url":null,"author_name":"HTN20190109","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fhtn20190109.hatenablog.com%2Fentry%2F2022%2F10%2F26%2F192342\" title=\" \u9023\u756a\u66f4\u65b0 - 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_name":"Hatena Blog","blog_url":"https://htn20190109.hatenablog.com/","description":"MySQL (8.0.29)drop table tab1;create table tab1(col1 bigint,col2 bigint); set @i:=0; insert into tab1(col1) select row_number() over(order by table_catalog) from information_schema.columns limit 10;select * from tab1; set @i:=0; update tab1 set col2 = @i:=@i+1;select * from tab1; set @i:=0; update t\u2026","provider_url":"https://hatena.blog","blog_title":"HTN20190109\u306e\u65e5\u8a18"}