mysql

常用指令

# 授权
grant select,insert,update,delete on db_name.* to db_user@'127.0.0.1' identified by 'your_password';
grant all privileges on db_name.* to db_user@'localhost' identified by 'your_password';
flush privileges;

# dump and load .sql file
mysqldump [--no-data] -u root -p db_name [table_name, table_name2, ...] > your_dump_file.sql
mysql>source your_dump_file_path;

# 看数据库里，行数最多的表
use information_schema;
select TABLE_NAME, TABLE_ROWS from TABLES order by TABLE_ROWS desc limit 20;