FOR UPDATE, 2666 FORCE plugin activation option, 1077 FORCE INDEX, 1806, 5313 FORCE KEY, 1806 force option myisamchk, 568, 569 myisampack, 581 mysql, 425 mysqladmin, 457 mysqlcheck, 468 mysqldump, 487 mysqlimport, 507 mysql_upgrade, 410 force-if-open option mysqlbinlog, 608 force-read option mysqlbinlog, 608 FORCE_INSOURCE_BUILD option CMake, 225 FORCE_PLUS_PERMANENT plugin activation option, 1077 FORCE_UNSUPPORTED_COMPILER option CMake, 232 foreign key, 6152 constraint, 82, 83 deleting, 2493, 2578 FOREIGN KEY constraint, 6152 foreign key constraints, 2574 FOREIGN KEY constraints and online DDL, 3195 foreign keys, 80, 331, 2493 metadata locking, 1829 foreign_keys table data dictionary table, 1017 foreign_key_checks system variable, 800 foreign_key_column_usage table data dictionary table, 1017 FORMAT(), 2176 FORMAT_BYTES() function, 2434 format_bytes() function sys schema, 5203 format_path() function sys schema, 5203 FORMAT_PICO_TIME() function, 2435 format_statement() function sys schema, 5204 format_time() function sys schema, 5205 formfeed (\f), 2372 forums, 71 FOUND_ROWS(), 2284 deprecated features, 41 FPROFILE_GENERATE option 5385