MySQL: Setting Up the Time Clock（mysql设置时间）
MySQL is a popular database system used to store and retrieve data. It is used by millions of people and organizations around the world. If you’re new to MySQL, then setting up the time clock is an important step towards taking full advantage of all its features.
First, you need to check the installation and make sure that MySQL is running correctly. In a Linux command line, you can type in “mysql -u root -p”, followed by your root password. This will provide you with access to the database. Then you should type in “SHOW GLOBAL VARIABLES LIKE ‘system_time_zone’;”. This should return the current MySQL system time zone.
Next, you can configure the timezone. You can use the “SET GLOBAL time_zone=’zone_name’;” command to set the timezone. Replace “zone_name” with the right timezone name. For example, if you are in the United States of America and Pacific Time Zone is the closest one to your location, you can use “SET GLOBAL time_zone=’America/Los_Angeles’;”.
After setting the timezone, you need to set up the clock. The easiest way to do this is by using the mysqldump command. First, make sure that you are in the mysql directory. Then simply run the command “mysqldump –defaults-file=my.cnf –all-databases >date.sql”. This command creates a back-up of all the databases and saves them in a file called date.sql. Then, you can use the following command “mysql –defaults-file=my.cnf -e ‘SOURCE date.sql’” to restore the database and also update the system time.
Finally, once you’ve done all that, you should restart MySQL to make sure the changes take effect. In the command line, type “sudo /etc/init.d/mysql restart” and the restart process should begin. To check that the changes were successful, type “SHOW GLOBAL VARIABLES LIKE ‘system_time’”; to confirm that MySQL has updated the system time.
The process of setting up the time clock in MySQL is relatively straightforward. As long as you follow the instructions, you should be able to set it up properly. Once you’ve finished, you’ll be able to take full advantage of all the features of MySQL.
