Front end developers must read! Starting from scratch, teach you to build a low code website platform in stages>>>

MySQL error 1558 (HY000): column count of mysql.user is wrong

1. The following error was reported when creating database with MySQL today:

mysql> CREATE USER 'dev'@'%' IDENTIFIED BY '123456'; 
ERROR 1558 (HY000): Column count of mysql.user is wrong. Expected 43, found 42. Created with MySQL 50560, now running 50643. Please use mysql_upgrade to fix this error.

2. Solutions

The main reason for this error is that I upgraded the database and did not use it. Just use the following command:

[root@vm172-31-0-6 ~]# mysql_upgrade -u root -p
Enter password: 
Looking for 'mysql' as: mysql
Looking for 'mysqlcheck' as: mysqlcheck
Running 'mysqlcheck with default connection arguments
Warning: Using a password on the command line interface can be insecure.
Running 'mysqlcheck with default connection arguments
Warning: Using a password on the command line interface can be insecure.
mysql.columns_priv                                 OK
mysql.db                                           OK
mysql.event                                        OK
mysql.func                                         OK
mysql.general_log                                  OK
mysql.help_category                                OK
mysql.help_keyword                                 OK
mysql.help_relation                                OK
mysql.help_topic                                   OK
mysql.host                                         OK
mysql.ndb_binlog_index                             OK
mysql.plugin                                       OK
mysql.proc                                         OK
mysql.procs_priv                                   OK
mysql.proxies_priv                                 OK
mysql.servers                                      OK
mysql.slow_log                                     OK
mysql.tables_priv                                  OK
mysql.time_zone                                    OK
mysql.time_zone_leap_second                        OK
mysql.time_zone_name                               OK
mysql.time_zone_transition                         OK
mysql.time_zone_transition_type                    OK
mysql.user                                         OK
Running 'mysql_fix_privilege_tables'...
Warning: Using a password on the command line interface can be insecure.
Running 'mysqlcheck with default connection arguments
Warning: Using a password on the command line interface can be insecure.
Running 'mysqlcheck with default connection arguments
Warning: Using a password on the command line interface can be insecure.
OK

3. Create the database again

mysql> CREATE USER 'dev'@'%' IDENTIFIED BY '123456';
Query OK, 0 rows affected (0.00 sec)

Discovery successfully created