Three methods of modifying time zone in MySQL

Summary record modification mysql Three ways to time zone .

Method 1 ： adopt mysql Dynamic modification in command line mode

1.1 see mysql current time , Current time zone

> select curtime();  # or select now() It's fine too 
+-----------+
| curtime() |
+-----------+
| 15:18:10 |
+-----------+
> show variables like "%time_zone%";
+------------------+--------+
| Variable_name  | Value |
+------------------+--------+
| system_time_zone | CST  |
| time_zone    | SYSTEM |
+------------------+--------+

1.2 Change the time zone

> set global time_zone = '+8:00'; ## modify mysql The global time zone is Beijing time , That is where we are 8 District 
> set time_zone = '+8:00'; ## Modify the current session time zone 
> flush privileges; # Immediate effect 

Method 2 ： By modifying the my.cnf Configuration file to modify the time zone

# vim /etc/my.cnf ## stay [mysqld] Add... To the area 
default-time_zone = '+8:00'
# /etc/init.d/mysqld restart ## restart mysql Make the new time zone effective 

Method 3 ： If it is not convenient to restart mysql, I want to solve the time zone problem temporarily , Can pass php Or other languages are initializing mysql Initializes mysql The time zone
here , With php For example , stay mysql_connect() Next use :

mysql_query("SET time_zone = '+8:00'")