{"provider_url":"https://hatena.blog","provider_name":"Hatena Blog","published":"2023-05-08 22:59:49","type":"rich","url":"https://htn20190109.hatenablog.com/entry/2023/05/08/225949","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fhtn20190109.hatenablog.com%2Fentry%2F2023%2F05%2F08%2F225949\" title=\" \u6700\u5927\u30ab\u30e9\u30e0\u6570 - 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>","categories":["DB"],"description":"MySQL 1017Oracle 1000 or 4096PostgreSQL 1600SQL Server 1024 MySQL (8.0.32)https://dev.mysql.com/doc/refman/8.0/en/column-count-limit.htmlhttps://dev.mysql.com/doc/refman/8.0/en/innodb-limits.html 1017 \u203b 65,535 \u30d0\u30a4\u30c8\u306e MySQL \u6700\u5927\u884c\u30b5\u30a4\u30ba\u5236\u9650\u3042\u308a : > a.sql echo \"drop table tab1;\" >> a.sql echo \"create table tab1(\"\u2026","title":" \u6700\u5927\u30ab\u30e9\u30e0\u6570","width":"100%","version":"1.0","blog_url":"https://htn20190109.hatenablog.com/","height":"190","image_url":null,"blog_title":"HTN20190109\u306e\u65e5\u8a18","author_name":"HTN20190109","author_url":"https://blog.hatena.ne.jp/HTN20190109/"}