MySQL on Windows Access denied for user ‘root’@'localhost’ (using password: NO)

admin — Wed, 10 Feb 2010 22:04:20 +0000

I use MySQL 5.1 ‘on localhost’ commonly for wordpress development. Today started new project and attempted to design database using MySQL Control Center, Navicat, command line mysql client and all time get this ~~fucking~~ annoying

Access denied for user ‘root’@'localhost’ (using password: NO)

Who is fault? No matter. Probably, because of my root user doesn’t have password.

What to do? Finally i did next:

1. Stopped mysql server: i simply found mysqld process in windows task manager and stopped it.
2. Created init.txt file with next content:

UPDATE mysql.user SET Password=PASSWORD(‘mypassword’) WHERE User=’root’;
FLUSH PRIVILEGES;
grant all privileges on *.* to root@localhost identified by ‘mypassword’ with grant option;
grant all privileges on mydatabase.* to root@localhost identified by ‘mypassword’ with grant option;

3. Run mysql server from command line as:

mysqld –init-file=F:\mysql\bin\init.txt

voila

How to copy content from one database to another

How to copy content from one database to another

admin — Wed, 03 Feb 2010 15:36:10 +0000

how to duplicate database

For doing this you need:

1. Copy database to file:

mysqldump -u username -p password database_to_copy_from > FILE.sql

2. Create new database. I preffered GUI tools like MySQL Control Center. Or use next comands:

mysql> CREATE DATABASE ”database_to_copy_to”;
mysql> GRANT ALL PRIVILEGES ON ”database_to_copy_to”.* TO “”username””@””hostname”” IDENTIFIED BY “”password””
mysql> FLUSH PRIVILEGES;
mysql> EXIT

3. Copy database from file to new database

mysql -u username -p password database_to_copy_to< FILE.sql