mysql notes

gistfile1.txt

$ mysql -u adminusername -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 5340 to server version: 3.23.54

Type 'help;' or '\h' for help. Type '\c' to clear the buffer.

mysql> CREATE DATABASE databasename;
Query OK, 1 row affected (0.00 sec)

mysql> GRANT ALL PRIVILEGES ON databasename.* TO "wordpressusername"@"hostname"
    -> IDENTIFIED BY "password";
Query OK, 0 rows affected (0.00 sec)

mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.01 sec)

mysql> EXIT
Bye
$

-- 備份某個資料庫

# mysqldump -u root -p db_name > backup.sql;

-- 備份資料庫中的某個資料表

# mysqldump -u root -p db_name table_name > backup.sql;

-- 備份所有資料庫

# mysqldump -u root -p --all-databases > backup.sql;

-- 復原一個資料庫 (需先建好db_name 這個資料庫, 若沒建立請先執行 mysqladmin create db_name 建立即可)

# mysql -u root -p db_name < backup.sql

-- 復原多個資料庫 ( 因為backup.sql 內已有 CREATE DATABASE指令,因此不需先建DB)

# mysql -u root -p < backup.sql