Server IP : 172.67.216.182 / Your IP : 162.158.162.89 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/ndb/r/ |
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CREATE TABLE parent ( id INT NOT NULL AUTO_INCREMENT, bogus_column char(32), PRIMARY KEY (id) ) ENGINE=ndb; CREATE TABLE child ( id INT NOT NULL AUTO_INCREMENT, parent_id INT NOT NULL, bogus_column char(32), PRIMARY KEY (id), KEY (parent_id) ) ENGINE=ndb; alter table child add constraint fkname foreign key (parent_id) references parent (id) on update restrict on delete restrict; INSERT INTO parent (bogus_column) VALUES ('aaa'), ('bbb'), ('ccc'), ('ddd'), ('eee'); INSERT INTO child (parent_id,bogus_column) VALUES (1, 'aaa'), (2,'bbb'), (3, 'ccc'), (4, 'ddd'), (5, 'eee'); START TRANSACTION; START TRANSACTION; UPDATE child SET parent_id = 5 WHERE parent_id = 4; UPDATE parent SET bogus_column = 'new!' WHERE id = 4; UPDATE parent SET bogus_column = 'new!' WHERE id = 5; ERROR HY000: Lock wait timeout exceeded; try restarting transaction rollback; rollback; alter table child drop foreign key fkname; alter table child add constraint fkname foreign key (parent_id) references parent (id); START TRANSACTION; START TRANSACTION; UPDATE child SET parent_id = 5 WHERE parent_id = 4; UPDATE parent SET bogus_column = 'new!' WHERE id = 4; UPDATE parent SET bogus_column = 'new!' WHERE id = 5; commit; commit; drop table child, parent; CREATE TABLE t1 ( id int(11) NOT NULL auto_increment, ref_id int(11) default NULL, PRIMARY KEY (id), KEY ref_id (ref_id), CONSTRAINT ref_id FOREIGN KEY (ref_id) REFERENCES t1 (id) ) ENGINE=ndb; INSERT INTO t1 VALUES (1, 1); DELETE FROM t1 WHERE id = 1; drop table t1;