f文件具体解析：
/djwhome/p/12543849.html
mysql5.5安装好找不到f————瞬间明白！
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要想解决这个问题，就是将mysql启动自动使用的目录中的几种配置文件选择其中的一种复制为f，此时要记得先关闭数据库
sudo /usr/local/MySQL/support-files/mysql.server stop
1.找到mysql启动自动使用的目录，在mysql安装成功后自启动目录中会看到my-small.ini、my-medium.ini、my-large.ini、my-huge.ini几种配置文件，下面显示分别用于不同的硬件环境下的配置文件:
my-f（内存 <= 64M）my-f（内存 128M）my-f（内存 512M）my-f （内存 1G-2G）my-innodb-heavy-f（内存 4GB）
2.这里我的内存设置为1G，所以将my-f复制到/etc/下并改名字为f
cp my-f /etc/f
**3.按需修改，这样就有一个没错的f啦～不要去别人那里复制会报错 **
3.Mysql导入数据结构时报错[ERR] 1067 - Invalid default value for ‘字段’
A.如果字段为data相关：
修改f文件
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1.在[mysqld]中修改添加：
sql_mode=ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
2.给文件权限后重新启动
sudo chmod 664 /etc/f
B.错误因字段问题：修改mysql数据库的默认编码方式：UTF8
/weixin_42329733/article/details/113333120
将MySQL默认编码修改为UTF-8呢？只需在my.ini中的[mysqld]组名的末尾添加：character-set-server=utf8即可。
那mysqld:unknown variable 'default-character-set=utf8’的错误原因是什么呢？因为参数：default-character-set=utf8 在较新版本的MySQL 中已移除。所以，建议高版本的MySQL使用”character-set-server“，而不要使用“default-character- set”。
C.导入的时候仔细查看一下报错日志，去sql文件中查看该字段，可能忘记少加逗号了。。。。不要问我怎么知道的 是我浪费一天时间换来的
附上我的f-----版本是mysql@5.5
# 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:# /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]#password= your_passwordport= 3306socket= /tmp/mysql.sockdefault-character-set=utf8# Here follows entries for some specific programs# The MySQL server[mysqld]port= 3306socket= /tmp/mysql.sockskip-external-lockingkey_buffer_size = 16Kcharacter-set-server=utf8max_allowed_packet = 1Mtable_open_cache = 4sort_buffer_size = 64Kread_buffer_size = 256Kread_rnd_buffer_size = 256Knet_buffer_length = 2Kthread_stack = 128Ksql_mode=ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION#sql_mode=ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION#sql_mode='ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,ALLOW_INVALID_DATES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION';# 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-networkingserver-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]quickmax_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 = 8Msort_buffer_size = 8M[mysqlhotcopy]interactive-timeout
