select schema_name from information_schema.schemata where schema_name not in ('sys', 'performance_schema');
schema_name
information_schema
mtr
mysql
test
show tables in mysql;
Tables_in_mysql
columns_priv
db
engine_cost
event
func
general_log
gtid_executed
help_category
help_keyword
help_relation
help_topic
innodb_index_stats
innodb_table_stats
ndb_binlog_index
plugin
proc
procs_priv
proxies_priv
server_cost
servers
slave_master_info
slave_relay_log_info
slave_worker_info
slow_log
tables_priv
time_zone
time_zone_leap_second
time_zone_name
time_zone_transition
time_zone_transition_type
user