STARTS CURRENT_TIMESTAMP + INTERVAL 2 DAY This event would cause MySQL to drop a table once each year for five years, starting exactly 2 days from now: STARTS CURRENT_TIMESTAMP + INTERVAL 3 DAY For example, this event tells the database to drop a table once each year, starting exactly 3 days from now: 'EVERY interval ' means 'Do this repeatedly, starting at timestamp1 if it's specified, ending at timestamp2 if it's specified'. Not using ENDS means that the event continues executing indefinitely. The ENDS keyword is followed by a timestamp value that tells MySQL when the event should stop repeating. Not specifying STARTS is the same as using STARTS CURRENT_TIMESTAMP so that the event begins repeating immediately upon creation of the event.Īn EVERY clause may also contain an ENDS clause. STARTS is followed by a timestamp value that indicates when the action should begin repeating, and may also use + INTERVAL interval to specify an amount of time 'from now'. A recurring interval starts with EVERY, followed by a positive integer plus an INTERVAL interval, as we saw in the last blog.įor example, this event makes MySQL drop table t once each year, starting now:ĬREATE EVENT e ON SCHEDULE EVERY 1 YEAR DO DROP TABLE t The STARTS and ENDS ClausesĪn EVERY clause may contain an optional STARTS and/or ENDS clause. This event makes the MySQL server drop a table on Februat exactly 12 o'clock:ĮVERY interval means 'Do this repeatedly'. ON SCHEDULE AT CURRENT_TIMESTAMP + INTERVAL 5 DAY This event makes the MySQL server drop a table exactly 5 days from now: Here are two examples using the 'AT timestamp' clause. EVERY interval STARTS timestamp ENDS timestamp.Scheduling ParametersĪn event's 'schedule' can be a timestamp in the future, a recurring interval, or a combination of recurring intervals and timestamps. In today's blog, we'll explore the syntax to create events to run according to various schedules, from very simple, to more complex. Moreover, rather than having an event that just runs once or forever, you can also schedule a recurring event that is valid only within a specific time period, using START and END clauses.

There are some challenges inherent to events, such as making an event recur, and making it run at a given time. Despite all of this, getting a firm grasp of event scheduling can still take some trial and error. To help you write your event statements, MySQL provides excellent documentation on CREATE EVENT syntax. They employ a natural language scheduling syntax, so that you can say: 'I want the MySQL server to execute this SQL statement every day at 11:30am, until the end of the year'. Since version 5.1.6, MySQL has supported events.

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