Mysql uuid9/22/2023 ![]() ON DUPLICATE KEY UPDATE statement, you can use Not work with statement-based replication. More than 16 million times per second between You don't set back your system time for your server Performed on two separate computers that are not connectedĪ UUID is a 128-bit number represented by aĬurrent host is unique among your set of master and Generate two different values, even if these calls are Specifications published by The Open Group in October 1997Ī UUID is designed as a number that is globally unique in (Appendix A) CAE (Common Applications Environment) Returns a Universal Unique Identifier (UUID) generatedĪccording to “ DCE 1.1: Remote Procedure Call” The duration may have a fractional part given Sleeps (pauses) for the number of seconds given by the ![]() Lock does not exist if it was never obtained by a call to Thread (in which case the lock is not released), and Section 18.6, “Binary Logging of Stored Programs”, You might seeĠ if the lock was not established by this References to local program variables, as described in When writing statements from stored programs that contain Is past the specified position, the function returns Not initialized, the arguments are incorrect, or an errorīeen exceeded. SQL thread is not started, the slave's master information is Slave had to wait for to advance to the specified position. The return value is the number of log events the It blocks until the slave has read andĪpplied all updates up to the specified position in the This function is useful for control of master/slave If so, it returns theĬonnection identifier of the client that holds the lock. This function is unsafe for statement-based replication.īeginning with MySQL 5.5.1, a warning is logged if you use Given a numeric network address in network byte order (4 orĨ byte), returns the dotted-quad representation of the Greater than 127 cannot be stored correctly. Lock in the same order that they issued the lock requests.Ĭorresponding to IP addresses for which the first octet is In particular,Īpplications should not assume that clients will acquire the Which they will acquire it is undefined and depends onįactors such as the thread library in use. If multiple clients are waiting for a lock, the order in 'lock1' was automatically released by the Mysql> UPDATE t SET i = DEFAULT(i)+1 WHERE id SELECT GET_LOCK('lock1',10) Results if the column has no default value. Returns the default value for a table column.
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