本文主要给大家简单讲讲mysql删除用户错误怎么办，相关专业术语大家可以上网查查或者找一些相关书籍补充一下，这里就不涉猎了，我们就直奔主题吧，希望mysql删除用户错误怎么办这篇文章可以给大家带来一些实际帮助。

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1、错误提示

ERROR 1558 (HY000): Column count of mysql.user is wrong. Expected 43, found 42. Created with MySQL 50560, now running 50645. Please use mysql_upgrade to fix this error.

意思是数据库以前做过升级但是数据库里的mysql库没有升级导致的权限混乱
2、解决办法
升级数据库使用命令
mysql_upgrade -uroot -p ‘密码’

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.
mysqlcheck: Got error: 1064: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '.2_b_cloud_provider  FOR UPGRADE' at line 1 when executing 'CHECK TABLE ...  FOR UPGRADE'
cb-fetch-data-pre.cron_task             OK
cb-fetch-data-pre.cron_task_result         OK
cb-fetch-data-pre.xxl_job_qrtz_blob_triggers    OK
cb-fetch-data-pre.xxl_job_qrtz_calendars      OK
cb-fetch-data-pre.xxl_job_qrtz_cron_triggers    OK
cb-fetch-data-pre.xxl_job_qrtz_fired_triggers    OK
cb-fetch-data-pre.xxl_job_qrtz_job_details     OK
cb-fetch-data-pre.xxl_job_qrtz_locks        OK
cb-fetch-data-pre.xxl_job_qrtz_paused_trigger_grps OK
cb-fetch-data-pre.xxl_job_qrtz_scheduler_state   OK
cb-fetch-data-pre.xxl_job_qrtz_simple_triggers   OK
cb-fetch-data-pre.xxl_job_qrtz_simprop_triggers   OK
cb-fetch-data-pre.xxl_job_qrtz_trigger_group    OK
cb-fetch-data-pre.xxl_job_qrtz_trigger_info     OK
cb-fetch-data-pre.xxl_job_qrtz_trigger_log     OK
cb-fetch-data-pre.xxl_job_qrtz_trigger_logglue   OK
cb-fetch-data-pre.xxl_job_qrtz_trigger_registry   OK
cb-fetch-data-pre.xxl_job_qrtz_triggers       OK
cloudbest-index-point-pre.b_cloud_provider     OK
cloudbest-index-point-pre.cron_task         OK
cloudbest-index-point-pre.cron_task_result_2019_09 OK
cloudbest-index-point-pre.cron_task_result_2019_10 OK
cloudbest-index-point-pre.cron_task_result_2019_11 OK
cloudbest-index-point-pre.cron_task_result_2019_12 OK
cloudbest-index-point-pre.cron_task_result_2020_01 OK
cloudbest-index-point-pre.cron_task_result_2020_02 OK
cloudbest-index-point-pre.cron_task_result_2020_03 OK
cloudbest-index-point-pre.cron_task_result_2020_04 OK
cloudbest-index-point-pre.cron_task_result_2020_05 OK
cloudbest-index-point-pre.cron_task_result_2020_06 OK
cloudbest-index-point-pre.cron_task_result_2020_07 OK
cloudbest-index-point-pre.cron_task_result_2020_08 OK
cloudbest-index-point-pre.cron_task_result_2020_09 OK
cloudbest-index-point-pre.i_index_rank       OK
cloudbest-index-point-pre.i_instances        OK
cloudbest-index-point-pre.i_model          OK
cloudbest-index-point-pre.i_model_price       OK
cloudbest-index-point-pre.i_performance_reportes  OK
cloudbest-index-point-pre.i_region         OK
cloudbest-index-point-pre.statistic_index      OK
cloudbest-market.ddos_accounts           OK
cloudbest-market.ddos_custom            OK
cloudbest-market.ddos_shield_info          OK
cloudbest-market.ddos_task_queue          OK
cloudbest-order.cb_order              OK
FATAL ERROR: Error during call to mysql_check for upgrading the tables names on all db(s) except mysql

最后一个错误是因为其他的数据库表没法更改，这个不会影响。 到这算是解决上面的错误。权限可以正常使用了

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