Tag Archives: mysql

Recover MySql password

You can recover MySQL database server password with following five easy steps.

Step # 1: Stop the MySQL server process.

Step # 2: Start the MySQL (mysqld) server/daemon process with the –skip-grant-tables option so that it will not prompt for password.

Step # 3: Connect to mysql server as the root user.

Step # 4: Setup new root password.

Step # 5: Exit and restart MySQL server.

Here are commands you need to type for each step (login as the root user):
Step # 1 : Stop mysql service
# /etc/init.d/mysql stop
Output:
Stopping MySQL database server: mysqld.
Step # 2: Start to MySQL server w/o password:
# mysqld_safe --skip-grant-tables &
Output:
[1] 5988

Starting mysqld daemon with databases from /var/lib/mysql mysqld_safe[6025]: started
Step # 3: Connect to mysql server using mysql client:
# mysql -u root
Output:
Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connection id is 1 to server version: 4.1.15-Debian_1-logType ‘help;’ or ‘\h’ for help. Type ‘\c’ to clear the buffer.

mysql>
Step # 4: Setup new MySQL root user password.
mysql> use mysql;
mysql> update user set password=PASSWORD("NEW-ROOT-PASSWORD") where User='root';
mysql> flush privileges;
mysql> quit
Step # 5: Stop MySQL Server:
# /etc/init.d/mysql stop
Output:
Stopping MySQL database server: mysqld

STOPPING server from pid file /var/run/mysqld/mysqld.pid

mysqld_safe[6186]: ended[1]+ Done mysqld_safe –skip-grant-tables
Step # 6: Start MySQL server and test it
# /etc/init.d/mysql start
# mysql -u root -p

copying rows in mysql

hmmm.. dint get much info about copying a row in mysql, so thought will put the code here.. its useful sometime..

the code is

INSERT INTO destinationTable (column_list) (SELECT column_list FROM sourceTable WHERE condition=check)

replace the condition with your condition.

To copy within the same table, the destination and the source table will be the same. And if you have an auto_increment counter in your table then do not include that column in the list!

chalo happy querying!

ps: that one should have come long back!