| Server IP : 172.67.216.182 / Your IP : 104.23.175.183 Web Server : Apache System : Linux krdc-ubuntu-s-2vcpu-4gb-amd-blr1-01.localdomain 5.15.0-142-generic #152-Ubuntu SMP Mon May 19 10:54:31 UTC 2025 x86_64 User : www ( 1000) PHP Version : 7.4.33 Disable Function : passthru,exec,system,putenv,chroot,chgrp,chown,shell_exec,popen,proc_open,pcntl_exec,ini_alter,ini_restore,dl,openlog,syslog,readlink,symlink,popepassthru,pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,imap_open,apache_setenv MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : OFF | Sudo : ON | Pkexec : ON Directory : /www/server/mysql/src/mysql-test/suite/innodb/r/ |
Upload File : |
# # Test the limits of a file-per-table tablespace name. MySQL combines # the database name with the table name to make a unique table name. # SET default_storage_engine=InnoDB; # # MySQL limits each database and tablename identifier to 64 characters # of up to 3 bytes per character, corresponding to 192 bytes. # CREATE DATABASE `this_sixty_five_byte_name_is_too_long____________________________`; ERROR 42000: Identifier name 'this_sixty_five_byte_name_is_too_long____________________________' is too long CREATE DATABASE `this_sixty_four_byte_name_is_not_too_long_______________________`; USE `this_sixty_four_byte_name_is_not_too_long_______________________`; # # A 64 character tablename can be created in a 64 character database name # CREATE TABLE `this_sixty_four_byte_name_is_not_too_long_______________________`.`this_sixty_four_byte_name_is_not_too_long_______________________` (a SERIAL); # # A 65 character tablename is too long. # CREATE TABLE `test`.`this_sixty_five_byte_name_is_too_long____________________________` (a SERIAL); ERROR 42000: Identifier name 'this_sixty_five_byte_name_is_too_long____________________________' is too long CREATE TABLE `this_sixty_four_byte_name_is_not_too_long_______________________`.`this_sixty_five_byte_name_is_too_long____________________________` (a SERIAL); ERROR 42000: Identifier name 'this_sixty_five_byte_name_is_too_long____________________________' is too long # # Show the successfully created database and table # SHOW CREATE TABLE `this_sixty_four_byte_name_is_not_too_long_______________________`.`this_sixty_four_byte_name_is_not_too_long_______________________`; Table Create Table this_sixty_four_byte_name_is_not_too_long_______________________ CREATE TABLE `this_sixty_four_byte_name_is_not_too_long_______________________` ( `a` bigint(20) unsigned NOT NULL AUTO_INCREMENT, UNIQUE KEY `a` (`a`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 ---- list_files MYSQLD_DATADIR/this_sixty_four_byte_name_is_not_too_long_______________________ db.opt this_sixty_four_byte_name_is_not_too_long_______________________.frm this_sixty_four_byte_name_is_not_too_long_______________________.ibd SELECT name FROM information_schema.innodb_sys_tables WHERE name LIKE '%long%'; name this_sixty_four_byte_name_is_not_too_long_______________________/this_sixty_four_byte_name_is_not_too_long_______________________ SELECT name FROM information_schema.innodb_sys_tablespaces WHERE name LIKE '%long%'; name this_sixty_four_byte_name_is_not_too_long_______________________/this_sixty_four_byte_name_is_not_too_long_______________________ SELECT path FROM information_schema.innodb_sys_datafiles WHERE path LIKE '%long%'; path ./this_sixty_four_byte_name_is_not_too_long_______________________/this_sixty_four_byte_name_is_not_too_long_______________________.ibd SELECT file_name, tablespace_name FROM information_schema.files WHERE file_name LIKE '%long%'; file_name ./this_sixty_four_byte_name_is_not_too_long_______________________/this_sixty_four_byte_name_is_not_too_long_______________________.ibd tablespace_name innodb_file_per_table_## # # Cleanup # DROP DATABASE `this_sixty_four_byte_name_is_not_too_long_______________________`;