auto_increment_increment
auto_increment_offset
autocommit
automatic_sp_privileges
character_set_client
character_set_database
character_set_connection
character_set_results
character-set-server
collation_connection
collation_database
collation-server
insert_id
last_insert_id
read_only
sql_auto_is_null
sql_big_selects
sql_big_tables
sql_mode
tx_isolation
warning_count
identity