大家好，又见面了，我是你们的朋友全栈君。
本文转载自：http://www.cnblogs.com/zlslch/p/5937784.html
错误问题的描述：
ERROR 1045 (28000): Access denied for user ‘ODBC’@’localhost’ (using password: NO)
ERROR 1045 (28000): Access denied for user ‘ODBC’@’localhost’ (using password: YES)
windows下，以上两个错误的解决方法
解决方法：
1、找到配置文件my.ini ，然后将其打开，可以选择用NotePadd++打开
2、打开后，搜索mysqld关键字
找到后，在mysqld下面添加skip-grant-tables，保存退出。
PS：若提示不让保存时，可以将该文件剪切到桌面，更改保存后再复制到mySQL目录下
# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/5.7/en/server-configuration-defaults.html
# *** DO NOT EDIT THIS FILE. It’s a template which will be copied to the
# *** default location during install, and will be replaced if you
# *** upgrade to a newer version of MySQL.
[mysqld]
skip-grant-tables
# Remove leading # and set to the amount of RAM for the most important data
# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.
# innodb_buffer_pool_size = 128M
# Remove leading # to turn on a very important data integrity option: logging
# changes to the binary log between backups.
# log_bin
# These are commonly set, remove the # and set as required.
basedir = D:\SoftWare\MySQL\mysql-5.7.11-winx64
datadir = D:\SoftWare\MySQL\mysql-5.7.11-winx64\Data
port = 3306
# server_id = …..
# Remove leading # to set options mainly useful for reporting servers.
# The server defaults are faster for transactions and fast SELECTs.
# Adjust sizes as needed, experiment to find the optimal values.
# join_buffer_size = 128M
# sort_buffer_size = 2M
# read_rnd_buffer_size = 2M
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
这样，是用于跳过密码问题，但是呢，这并不能彻底解决！
3、重启mysql服务
在任何路径目录下，都可以关闭/重启mysql的服务呢。（因为，之前，已经配置全局的环境变量了）
net stop mysql
net start mysql
4、进入数据库，重设置密码。
mysql -u root -p Enter
不用管password Enter
mysql> use mysql; Enter
mysql> update mysql.user set authentication_string=password(‘rootroot’) where user=’root’; （密码自己设）
mysql> flush privileges; 刷新数据库
mysql> quit;
5、密码重设置成功，改好之后，再修改一下my.ini这个文件，把我们刚才加入的”skip-grant-tables”这行删除，保存退出再重启mysql服务就可以了。
6、重启mysql服务，并登录mysql用户，用户是root，密码是rootroot。
D:\SoftWare\MySQL\mysql-5.7.11-winx64\bin> net stop mysql
D:\SoftWare\MySQL\mysql-5.7.11-winx64\bin> net start mysql
D:\SoftWare\MySQL\mysql-5.7.11-winx64\bin>mysql -u root -p
Enter password:rootroot
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