{"url":"https://htn20190109.hatenablog.com/entry/2024/06/10/211324","blog_url":"https://htn20190109.hatenablog.com/","width":"100%","categories":["DB"],"height":"190","description":"MySQL (8.4.0) drop table tab1;create table tab1(col1 numeric(10,2), col2 varchar(1), col3 varchar(10), col4 datetime(3) ); insert into tab1 values(1.01, '\u3042', '1234567890', now(3) );insert into tab1 values(1.02, ',', '', now(3) );insert into tab1 values(1.03, 'X', NULL, now(3) ); select * from tab1; \u2026","author_url":"https://blog.hatena.ne.jp/HTN20190109/","author_name":"HTN20190109","image_url":null,"title":"checksum table","version":"1.0","published":"2024-06-10 21:13:24","blog_title":"HTN20190109\u306e\u65e5\u8a18","provider_url":"https://hatena.blog","provider_name":"Hatena Blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fhtn20190109.hatenablog.com%2Fentry%2F2024%2F06%2F10%2F211324\" title=\"checksum table - 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>","type":"rich"}