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use db; -- select user(),database();-- 建立账号 create user user1; create user user2@'192,168.21.76' identified with caching_sha2_password by 'user2'; -- 阅读全文
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use db; create table lg( id int unsigned, naem varchar(20), t timestamp, message varchar(100) ); select *from lg; drop table lg; insert into lg(id,nae 阅读全文
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一、介绍 CRUD即增加(Create)、查询(Retrieve)、更新(Update)、删除(Delete)四个单词的首字母缩写。 In computing, CRUD is an acronym for create, Retrieve, update, and delete. It is us 阅读全文