- 登录 - MySQL内部
- mysql -u root -p
-
- MySQL内部 - 查看数据库编码格式 (推荐用这个,我用的这个!)
- show variables like 'character%';
-
- MySQL内部 - 查看数据库编码格式 (这两个都可以查看数据库编码格式)
- show variables like ‘collation%’;
-
- mysql> show variables like 'character%';
- +--------------------------+-----------------------------------------------------------+
- | Variable_name | Value |
- +--------------------------+-----------------------------------------------------------+
- | character_set_client | utf8 |
- | character_set_connection | utf8 |
- | character_set_database | latin1 |
- | character_set_filesystem | binary |
- | character_set_results | utf8 |
- | character_set_server | latin1 |
- | character_set_system | utf8 |
- | character_sets_dir | /usr/local/mysql-5.7.28-macos10.14-x86_64/share/charsets/ |
- +--------------------------+-----------------------------------------------------------+
- /usr/local/mysql/support-files
- [mysqld]
- default-storage-engine=INNODB
- character-set-server=utf8
- lower_case_table_names = 1
- socket = /tmp/mysql.sock
- port = 3306
-
- [client]
- default-character-set=utf8
- # Example MySQL config file for small systems.
- #
- # This is for a system with little memory (<= 64M) where MySQL is only used
- # from time to time and it's important that the mysqld daemon
- # doesn't use much resources.
- #
- # MySQL programs look for option files in a set of
- # locations which depend on the deployment platform.
- # You can copy this option file to one of those
- # locations. For information about these locations, see:
- # http://dev.mysql.com/doc/mysql/en/option-files.html
- #
- # In this file, you can use all long options that a program supports.
- # If you want to know which options a program supports, run the program
- # with the "--help" option.
- # The following options will be passed to all MySQL clients
- [client]
- default-character-set=utf8
- #password = your_password
- port = 3306
- socket = /tmp/mysql.sock
- # Here follows entries for some specific programs
- # The MySQL server
- [mysqld]
- default-storage-engine=INNODB
- character-set-server=utf8
- collation-server=utf8_general_ci
- port = 3306
- socket = /tmp/mysql.sock
- lower_case_table_names = 1 # 是否对 sql 语句大小写敏感,1 表示不敏感,即不区分大小写
- skip-external-locking
- key_buffer_size = 16K
- max_allowed_packet = 1M
- table_open_cache = 4
- sort_buffer_size = 64K
- read_buffer_size = 256K
- read_rnd_buffer_size = 256K
- net_buffer_length = 2K
- thread_stack = 256K # 该字段根据需要修改,默认是128K,我的是因为启动报了这个字段的错导致启动失败,所以我改成256K了
-
- # Don't listen on a TCP/IP port at all. This can be a security enhancement,
- # if all processes that need to connect to mysqld run on the same host.
- # All interaction with mysqld must be made via Unix sockets or named pipes.
- # Note that using this option without enabling named pipes on Windows
- # (using the "enable-named-pipe" option) will render mysqld useless!
- #
- #skip-networking
- server-id = 1
- # Uncomment the following if you want to log updates
- #log-bin=mysql-bin
- # binary logging format - mixed recommended
- #binlog_format=mixed
- # Causes updates to non-transactional engines using statement format to be
- # written directly to binary log. Before using this option make sure that
- # there are no dependencies between transactional and non-transactional
- # tables such as in the statement INSERT INTO t_myisam SELECT * FROM
- # t_innodb; otherwise, slaves may diverge from the master.
- #binlog_direct_non_transactional_updates=TRUE
- # Uncomment the following if you are using InnoDB tables
- #innodb_data_home_dir = /usr/local/mysql/data
- #innodb_data_file_path = ibdata1:10M:autoextend
- #innodb_log_group_home_dir = /usr/local/mysql/data
- # You can set .._buffer_pool_size up to 50 - 80 %
- # of RAM but beware of setting memory usage too high
- #innodb_buffer_pool_size = 16M
- #innodb_additional_mem_pool_size = 2M
- # Set .._log_file_size to 25 % of buffer pool size
- #innodb_log_file_size = 5M
- #innodb_log_buffer_size = 8M
- #innodb_flush_log_at_trx_commit = 1
- #innodb_lock_wait_timeout = 50
- [mysqldump]
- quick
- max_allowed_packet = 16M
- [mysql]
- no-auto-rehash
- # Remove the next comment character if you are not familiar with SQL
- #safe-updates
- [myisamchk]
- key_buffer_size = 8M
- sort_buffer_size = 8M
- [mysqlhotcopy]
- interactive-timeout
- /etc
为什么要放 /etc 下,可以通过命令行查看 mysql 加载的 my.conf 是从哪些目录进行加载的
- $ mysql --verbose --help | grep my.cnf
-
- # 输出(只要符合一个路径就行)
- order of preference, my.cnf, $MYSQL_TCP_PORT,
- /etc/my.cnf /etc/mysql/my.cnf /usr/local/mysql/etc/my.cnf ~/.my.cnf
也可以自定义配置文件路径。- MySQL内部 - 查看数据库编码格式 (推荐用这个,我用的这个!)
- show variables like 'character%';
- mysql> show variables like 'character%';
- +--------------------------+-----------------------------------------------------------+
- | Variable_name | Value |
- +--------------------------+-----------------------------------------------------------+
- | character_set_client | utf8 |
- | character_set_connection | utf8 |
- | character_set_database | utf8 |
- | character_set_filesystem | binary |
- | character_set_results | utf8 |
- | character_set_server | utf8 |
- | character_set_system | utf8 |
- | character_sets_dir | /usr/local/mysql-5.7.28-macos10.14-x86_64/share/charsets/ |
- +--------------------------+-----------------------------------------------------------+