Mysql database - create user name & modify permission

0. see mysql Version information for

1）. Sign in mysql When , You can see mysql The specific version of

2）.select version() see

1. by mysql Create a user name

# alien  Is the user name  123456  It's a password 
create user alien identified by '123456';

#  Refresh the permissions 
flush privileges;	

#  Check whether the account has been created 
show grants for 'alien';	

2. Authorization for account CRUD jurisdiction

# test_data.*  representative test_data.*  Permissions of all tables under this library 
# *.* , All tables representing all libraries 
# [email protected]'%'  The user name can be represented in any ip Address access 
# [email protected]'localhost'  This represents the user name alien This database can only be accessed locally 

# mysql8.0 （ You can use the following methods ）
grant select,insert,update,delete on test_data.* to [email protected]'%' with grant option;
#  Authorize all permissions of the user 
grant all privileges on test_data.* to [email protected]'%' with grant option;

3.You have an error in your SQL syntax; check the manual that corresponds to year 'Identified by “xxxx” at line 1

# mysql 5.0 （ The old version ） Use the following method , The new version （8.0） And above use the above method 

grant select,insert,update,delete on test_data.* to [email protected]'%' identified by "xxxxx"