offset option mysqlbinlog, 610 OGC (see Open Geospatial Consortium) OLAP, 2405 old system variable, 846 old-style-user-limits option mysqld, 747 old_alter_table system variable, 846 old_passwords removed features, 43 OLTP, 6172 ON plugin activation option, 1077 ON DUPLICATE KEY INSERT modifier, 2635 ON DUPLICATE KEY UPDATE, 2630 new features, 33 ON versus USING joins, 2675 one-database option mysql, 427 Ongoing_anonymous_gtid_violating_transaction_count status variable, 962 Ongoing_anonymous_transaction_count status variable, 962 Ongoing_automatic_gtid_violating_transaction_count status variable, 962 online, 6172 online DDL, 3175, 3176, 6172 concurrency, 3190 limitations, 3195 online location of manual, 2 online upgrades and downgrades (NDB Cluster), 4476 order of node updates, 4478 online-migration option mysql_migrate_keyring, 596 only-print option mysqlslap, 548 ONLY_FULL_GROUP_BY SQL mode, 2411 ONLY_FULL_GROUP_BY SQL mode, 975 opbatch option ndb_import, 4329 opbytes option ndb_import, 4329 OPEN, 2805 Open Geospatial Consortium, 2048 Open Source defined, 5 open tables, 452, 1736 open-files-limit option mysqlbinlog, 610 mysqld_safe, 386 Opened_files status variable, 962 Opened_tables status variable, 963 Opened_table_definitions status variable, 963 OpenGIS, 2048 5496