当我尝试删除mysql数据库时，在还原之前出现错误，
ERROR 1146 (42S02): Table 'mysql.proc' doesn't exist
但是mysql.proc在删除数据库之前已存在于数据库中。
知道为什么MySql在这里表现异常吗？
注意：这不是升级的数据库，这是新安装的MariaDb-10.0.26数据库。
Database changed
MariaDB [mysql]> show tables;
+---------------------------+
| Tables_in_mysql |
+---------------------------+
| column_stats |
| columns_priv |
| db |
| event |
| func |
| general_log |
| gtid_slave_pos |
| help_category |
| help_keyword |
| help_relation |
| help_topic |
| host |
| index_stats |
| innodb_index_stats |
| innodb_table_stats |
| plugin |
| proc |
| procs_priv |
| proxies_priv |
| roles_mapping |
| servers |
| slow_log |
| table_stats |
| tables_priv |
| time_zone |
| time_zone_leap_second |
| time_zone_name |
| time_zone_transition |
| time_zone_transition_type |
| user |
+---------------------------+
30 rows in set (0.00 sec)
MariaDB [mysql]> drop database mysql;
ERROR 1146 (42S02): Table 'mysql.proc' doesn't exist