1. Start, restart, stop, and view MySQL status
sudo /usr/local/mysql/support-files/mysql.server start
sudo /usr/local/mysql/support-files/mysql.server stop
sudo /usr/local/mysql /support-files/mysql.server restart
sudo /usr/local/mysql/support-files/mysql.server status
2. Reset password
If you do not use it for a long time, it is common to forget your password. . . A password reset is required at this point.
mysql -u root -p
3. Enter the database
/usr/local/MySQL/bin/mysql -u root -p
4. Query the database
show databases;
2. Connect to the remote database and enter the command line:
Suppose the IP of the remote host is: ip address, user name is root, password is 123456
1. Open the terminal and enter the following command:
mysql -h ip address -u root -p 123456
2. Enter the password:
The interface prompts to enter the password:
Enter password:
If it is the first time to use the database, the default password is empty, and you can enter the mysql command line directly by pressing Enter;
If a password has been set, enter the password and press Enter to enter the mysql command line.
3. Exit command: exit, press Enter to exit the mysql command line.
Four:
1. Create a database named NickYang create database NickYang character set utf8;
2. Modify the database encoding: alter database NickYang character set utf8;
3. Check whether the database is successfully created: show databases;
4. Enter the database: use NickYang;
5. Create a table and assign a primary key to the table: create table yang(id int primary key);
6. Check whether the table is created successfully: show tables;
7. View the table structure: desc table name;
8. Add field: alter table table name add field name data type [position];
alter table yang add name varchar(255) after id;
9. Delete field: alter table table name drop field name;
alter table yang drop name;
10. New data: insert into table name (field name) values (value)
insert into yang(id,name) values(1,'name');
11. Delete data: delete from table name [where condition];
delete from yang [where id = 1]
12. Modify data: update table name set field = value [where condition]
update yang set name = 'yang' where id = 1;
13. Find data: select * from table name [where condition];
select * from yang [where id = 1];