终于还是把本地的MySQL从5.5升级到了8.0

下载的官方压缩包，压缩包里面没有my.ini

拷贝的原来的5.5的，

把Myisam的参数去掉了，剩下以下这些：

01# MySQL Server Instance Configuration File
02# ----------------------------------------------------------------------
03# Generated by the MySQL Server Instance Configuration Wizard
04#
05#
06# Installation Instructions
07# ----------------------------------------------------------------------
08#
09# On Linux you can copy this file to /etc/my.cnf to set global options,
10# mysql-data-dir/my.cnf to set server-specific options
11# (@localstatedir@ for this installation) or to
12# ~/.my.cnf to set user-specific options.
13#
14# On Windows you should keep this file in the installation directory 
15# of your server (e.g. C:\Program Files\MySQL\MySQL Server X.Y). To
16# make sure the server reads the config file use the startup option 
17# "--defaults-file". 
18#
19# To run run the server from the command line, execute this in a 
20# command line shell, e.g.
21# mysqld --defaults-file="C:\Program Files\MySQL\MySQL Server X.Y\my.ini"
22#
23# To install the server as a Windows service manually, execute this in a 
24# command line shell, e.g.
25# mysqld --install MySQLXY --defaults-file="C:\Program Files\MySQL\MySQL Server X.Y\my.ini"
26#
27# And then execute this in a command line shell to start the server, e.g.
28# net start MySQLXY
29#
30#
31# Guildlines for editing this file
32# ----------------------------------------------------------------------
33#
34# In this file, you can use all long options that the program supports.
35# If you want to know the options a program supports, start the program
36# with the "--help" option.
37#
38# More detailed information about the individual options can also be
39# found in the manual.
40#
41#
42# CLIENT SECTION
43# ----------------------------------------------------------------------
44#
45# The following options will be read by MySQL client applications.
46# Note that only client applications shipped by MySQL are guaranteed
47# to read this section. If you want your own MySQL client program to
48# honor these values, you need to specify it as an option during the
49# MySQL client library initialization.
50#
51[client]
52 
53port=3306
54 
55[mysql]
56 
57default-character-set=utf8
58 
59 
60# SERVER SECTION
61# ----------------------------------------------------------------------
62#
63# The following options will be read by the MySQL Server. Make sure that
64# you have installed the server correctly (see above) so it reads this 
65# file.
66#
67[mysqld]
68 
69# The TCP/IP Port the MySQL Server will listen on
70port=3306
71 
72#定义时区
73default-time-zone='+08:00'
74 
75#Path to installation directory. All paths are usually resolved relative to this.
76basedir="E:/webhome/mysql-8.0.19"
77 
78#Path to the database root
79#datadir="C:/Documents and Settings/All Users/Application Data/MySQL/MySQL Server 5.5/Data/"
80datadir="E:/webhome/mysql-8.0.19/data"
81 
82# The default character set that will be used when a new schema or table is
83# created and no character set is defined
84character-set-server=utf8
85 
86# The default storage engine that will be used when create new tables when
87default-storage-engine=INNODB
88 
89# The maximum amount of concurrent sessions the MySQL server will
90# allow. One of these connections will be reserved for a user with
91# SUPER privileges to allow the administrator to login even if the
92# connection limit has been reached.
93max_connections=100
94 
95 
96# 默认使用“mysql_native_password”插件认证
97default_authentication_plugin=mysql_native_password