环境 mysql 8.0
window 10
进入mysql输入showvariableslike'%char%';查看自己的编码，如果是utf-8就不用往下看了
创建my.ini 把my.ini配置文件放到自己的安装目录下（一开始是没有my.ini文件的）
my.ini代码如下
##代码什么意思我就不解释了，自己去官网查看
[client]
port=3306
default-character-set=utf8
[mysql]
no-beep
default-character-set=utf8
[mysqld]
port=3306
datadir=C:/ProgramData/MySQL/MySQL Server 8.0/Data
character_set_server=utf8
collation-server=utf8_general_ci
default_authentication_plugin=caching_sha2_password
default-storage-engine=INNODB
sql-mode="STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION"
log-output=FILE
general-log=0
general_log_file="DESKTOP-P5GJ1E6.log"
slow-query-log=1
slow_query_log_file="DESKTOP-P5GJ1E6-slow.log"
long_query_time=10
log-error="DESKTOP-P5GJ1E6.err"
log-bin="DESKTOP-P5GJ1E6-bin"
server-id=1
report_port=3306
lower_case_table_names=1
secure-file-priv="C:/ProgramData/MySQL/MySQL Server 8.0/Uploads"
max_connections=151
table_open_cache=2000
tmp_table_size=30M
thread_cache_size=10
myisam_max_sort_file_size=100G
myisam_sort_buffer_size=51M
key_buffer_size=8M
read_buffer_size=64K
read_rnd_buffer_size=256K
innodb_flush_log_at_trx_commit=1
innodb_log_buffer_size=1M
innodb_buffer_pool_size=8M
innodb_log_file_size=48M
innodb_thread_concurrency=9
innodb_autoextend_increment=64
innodb_buffer_pool_instances=8
innodb_concurrency_tickets=5000
innodb_old_blocks_time=1000
innodb_open_files=300
innodb_stats_on_metadata=0
innodb_file_per_table=1
innodb_checksum_algorithm=0
back_log=80
flush_time=0
join_buffer_size=256K
max_allowed_packet=4M
max_connect_errors=100
open_files_limit=4161
sort_buffer_size=256K
table_definition_cache=1400
binlog_row_event_max_size=8K
sync_master_info=10000
sync_relay_log=10000
sync_relay_log_info=10000
最后重启服务就OK了
