#change root user's password for mysql
mysqladmin -u root -h localhost password 'new_password'
# Alternatively you can run:
/usr/bin/mysql_secure_installation
# which will also give you the option of removing the
test databases and anonymous user created by default. This is strongly recommended for production servers.
# login with root user
mysql -u root -h localhost
# import a *.sql into one database
mysql -uroot -p dbname <src.sql
# show databases
show databases;
# create user sa via any host by using password '123456'
create user 'sa'@'%' identified by '123456';
# grant all privileges for user sa on JESS database
grant all privileges on JESS.* to 'sa'@'%' with grant option;
# show grants for user
show grants for 'sa'@'%';
# delete user, the user's related previliges will be revoked
drop user 'sa'@'%';
# show variables
show variables like "%character%";
# custom parameter setting, set timeout to 1 year (in seconds)
# in /etc/my.cnf, under [mysqld]
wait_timeout = 31536000
interactive_timeout = 31536000
# create database
create database db;
# delete database
drop database db;
# specified key was too long problem, character set -> utf8
test@linux-uv0s:~/Download/JESS-Setup/SQLFiles> mysql -uroot -p testagms <back_mysql_test2.sql
Enter password:
ERROR 1071 (42000) at line 4: Specified key was too long; max key length is 1000 bytes
# show create table command
show create table AttendanceRecord;
# show engines
show engines;
# change default engine
# config file format, /etc/my.cnf
default-storage-engine=InnoDB
# command line format
--default-storage-engine=InnoDB
