在使用MariaDB时，使用命令升级了MariaDB版本，在使用Navicat Premium导出数据库数据和结构的时候除了问题
1558 - Column count of mysql.proc is wrong. Expected 21, found 20. Created with MariaDB 50564, now running 100412. Please use mysql_upgrade to fix this error可以使用 mysql_upgrade 命令来解决这个问题：
[root@172 ~]# mysql_upgrade -uroot -p
Enter password:
Phase 1/7: Checking and upgrading mysql database
Processing databases
mysql
mysql.columns_priv OK
mysql.db OK
mysql.event OK
mysql.func 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.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
Upgrading from a version before MariaDB-10.1
Phase 2/7: Installing used storage engines
Checking for tables with unknown storage engine
Phase 3/7: Fixing views
Phase 4/7: Running 'mysql_fix_privilege_tables'
Phase 5/7: Fixing table and database names
Phase 6/7: Checking and upgrading tables
Processing databases
db_mall
db_mall.aa OK
db_mall.t_mall_admin_user OK
db_mall.t_mall_carousel OK
db_mall.t_mall_goods_category OK
db_mall.t_mall_goods_detail OK
db_mall.t_mall_goods_info OK
db_mall.t_mall_index_category OK
db_mall.t_mall_index_config OK
db_mall.t_mall_index_left_category OK
db_mall.t_mall_order OK
db_mall.t_mall_order_item OK
db_mall.t_mall_shopping_cart_item OK
db_mall.t_mall_user OK
information_schema
performance_schema
Phase 7/7: Running 'FLUSH PRIVILEGES'
OK
[root@172 ~]#然后再执行导出数据和结构就可以啦。
