MAC 系統下命令行數據庫基本操做

建立/打開一個數據庫:

sqlite3 mysq.sqlite
//mysq.sqlite 爲數據庫名 若是已存在就代開 不存在就建立

建立一個表:

creat table myinfo(age intenger,name text);
//myinfo是表名 後面是參數和類型

插入一條數據:

insert into myinfo (age,name)values(22,kluermn);

刪除一條數據:

delete from myinfo where name = 'kluermn';

查找數據:

select * from myinfo;

修改表數據:

update myinfo set name = 'mn' where age = 22;

連表查詢:

select * from myinfo left join youinfo on myinfo.name = youinfo.name;