问题分析
在官方的文档中，对secure_file_priv进行了说明，它用于限制数据的导出。
- secure_file_priv 为 NULL 时，表示限制mysqld不允许导入或导出。
- secure_file_priv 为 /tmp 时，表示限制mysqld只能在/tmp目录中执行导入导出，其他目录不能执行。
- secure_file_priv 没有值时，表示不限制mysqld在任意目录的导入导出。
在Mysql中输入命令show variables like ‘%secure_file_priv%‘;可以看到默认secure_file_priv = NULL。
<span style="color: #000000;"> mysql> show global variables like ‘%secure_file_priv%‘; +------------------+-------+ | Variable_name | Value | +------------------+-------+ | secure_file_priv | NULL | +------------------+-------+</span>
解决办法
1. 检查support-files文件夹（路径 /usr/local/mysql/support-files 这是Mac中的隐藏文件夹，在Finder下shift+command+g然后输入路径），是否有my.cnf配置文件，在Mac中好像是默认不存在该文件（具体不清楚），需要我们自己手动配置Mysql。
2. （关闭Mysql）需要在 /etc下配置my.cnf，首先 cd /etc，然后手动配置，vim my.cnf，输入以下配置信息。
<span style="color: #000000;"> # Example MySQL config file for medium systems.
#
# This is for a system with little memory (32M - 64M) where MySQL plays
# an important part, or systems up to 128M where MySQL is used together with
# other programs (such as a web server)
#
# 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]
character-set-server=utf8
init_connect=‘SET NAMES utf8
port = 3306
socket = /tmp/mysql.sock
skip-external-locking
key_buffer_size = 16M
max_allowed_packet = 1M
table_open_cache = 64
sort_buffer_size = 512K
net_buffer_length = 8K
read_buffer_size = 256K
read_rnd_buffer_size = 512K
myisam_sort_buffer_size = 8M
character-set-server=utf8
init_connect=‘SET NAMES utf8‘
secure_file_priv=
# 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
# (via the "enable-named-pipe" option) will render mysqld useless!
#
#skip-networking
# Replication Master Server (default)
# binary logging is required for replication
log-bin=mysql-bin
# binary logging format - mixed recommended
binlog_format=mixed
# required unique id between 1 and 2^32 - 1
# defaults to 1 if master-host is not set
# but will not function as a master if omitted
server-id = 1
# Replication Slave (comment out master section to use this)
#
# To configure this host as a replication slave, you can choose between
# two methods :
#
# 1) Use the CHANGE MASTER TO command (fully described in our manual) -
# the syntax is:
#
# CHANGE MASTER TO MASTER_HOST=</span><span style="color: #0000ff;"><</span><span style="color: #800000;">host</span><span style="color: #0000ff;">></span>, MASTER_PORT=<span style="color: #0000ff;"><</span><span style="color: #800000;">port</span><span style="color: #0000ff;">></span><span style="color: #000000;">,
# MASTER_USER=</span><span style="color: #0000ff;"><</span><span style="color: #800000;">user</span><span style="color: #0000ff;">></span>, MASTER_PASSWORD=<span style="color: #0000ff;"><</span><span style="color: #800000;">password</span><span style="color: #0000ff;">></span><span style="color: #000000;"> ;
#
# where you replace </span><span style="color: #0000ff;"><</span><span style="color: #800000;">host</span><span style="color: #0000ff;">></span>, <span style="color: #0000ff;"><</span><span style="color: #800000;">user</span><span style="color: #0000ff;">></span>, <span style="color: #0000ff;"><</span><span style="color: #800000;">password</span><span style="color: #0000ff;">></span><span style="color: #000000;"> by quoted strings and
# </span><span style="color: #0000ff;"><</span><span style="color: #800000;">port</span><span style="color: #0000ff;">></span><span style="color: #000000;"> by the master‘s port number (3306 by default).
#
# Example:
#
# CHANGE MASTER TO MASTER_HOST=‘125.564.12.1‘, MASTER_PORT=3306,
# MASTER_USER=‘joe‘, MASTER_PASSWORD=‘secret‘;
#
# OR
#
# 2) Set the variables below. However, in case you choose this method, then
# start replication for the first time (even unsuccessfully, for example
# if you mistyped the password in master-password and the slave fails to
# connect), the slave will create a master.info file, and any later
# change in this file to the variables‘ values below will be ignored and
# overridden by the content of the master.info file, unless you shutdown
# the slave server, delete master.info and restart the slaver server.
# For that reason, you may want to leave the lines below untouched
# (commented) and instead use CHANGE MASTER TO (see above)
#
# required unique id between 2 and 2^32 - 1
# (and different from the master)
# defaults to 2 if master-host is set
# but will not function as a slave if omitted
#server-id = 2
#
# The replication master for this slave - required
#master-host = </span><span style="color: #0000ff;"><</span><span style="color: #800000;">hostname</span><span style="color: #0000ff;">></span><span style="color: #000000;">
#
# The username the slave will use for authentication when connecting
# to the master - required
#master-user = </span><span style="color: #0000ff;"><</span><span style="color: #800000;">username</span><span style="color: #0000ff;">></span><span style="color: #000000;">
#
# The password the slave will authenticate with when connecting to
# the master - required
#master-password = </span><span style="color: #0000ff;"><</span><span style="color: #800000;">password</span><span style="color: #0000ff;">></span><span style="color: #000000;">
#
# The port the master is listening on.
# optional - defaults to 3306
#master-port = </span><span style="color: #0000ff;"><</span><span style="color: #800000;">port</span><span style="color: #0000ff;">></span><span style="color: #000000;">
#
# binary logging - not required for slaves, but recommended
#log-bin=mysql-bin
# 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
default-character-set=utf8
[myisamchk]
key_buffer_size = 20M
sort_buffer_size = 20M
read_buffer = 2M
write_buffer = 2M
[mysqlhotcopy]
interactive-timeout</span>
3. sudo chmod 644 my.cnf，将该配置文件的读写执行权限改为644。（推荐每次修改该配置文件后都重新设置644权限）
4. 打开Mysql，输入 show variables like ‘%secure_file_priv%‘;可以看到secure_file_priv = 空。
<span style="color: #000000;"> mysql> show variables like ‘%secure_file_priv%‘; +------------------+-------+ | Variable_name | Value | +------------------+-------+ | secure_file_priv | | +------------------+-------+ 1 row in set (0.00 sec)</span>
Num2. MySQL导入数据显示“Error code:13. Can‘t get stat of ‘ ’（Permission denied）”解决办法：
解决办法：
在解决"secure-file-priv"问题后，导入数据时再次碰见错误。在google后找到解决办法。
将load data infile 改为 load data local infile。错误即可解决（具体原因不清楚）
Num3. MySQL导出数据显示“Can‘t create/write to file ‘Users/***’（Errcode:13）”解决办法：
问题分析：
这应该是关于MySQL临时文件目录的问题，为解决这个问题做了很多尝试，在my.cnf配置临时文件目录，并给予该文件777权限等等都没有解决问题。
解决办法：
最后同样在google上找到解决办法。如下图
这是由于权限问题，因为试图让mysql用户将数据写入私人主目录。我们可以在usr/local下创建一个文件夹，用来保存从mysql中导出的数据。
2019-06-30 18:03:14
总结关于Mac上使用MySQL一些常见的问题
标签：HERE location 使用 导出 local ash 解决 row however
本文系统来源：https://www.cnblogs.com/fuyusheng/p/11110643.html
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