<p>The Event Scheduler could not compile the SQL body of a CREATE EVENT or ALTER EVENT statement.</p>
<p>MySQL Error 1550 ER_EVENT_COMPILE_ERROR occurs when the Event Scheduler fails to compile the SQL inside an event definition. Check the event body for syntax mistakes, invalid privileges, or missing objects, then recreate or alter the event with corrected SQL to resolve the issue.</p>
Error during compilation of event's body
The error appears when MySQL's Event Scheduler attempts to parse and store an event definition but detects invalid SQL. The server stops compilation and returns code 1550 with SQLSTATE HY000.
The failure happens during CREATE EVENT, ALTER EVENT, or upon enabling an existing event. Until fixed, the event remains in a disabled state and will not execute on schedule.
MySQL validates the event body against the current schema and user privileges. Any syntax error, reference to non-existent objects, or blocked command generates the compile error.
The check occurs at creation time and again after server restart if the event scheduler reloads definitions from mysql.event.
Identify the failing event with SELECT name, last_modified, status FROM information_schema.events WHERE status = 'DISABLED'.
Inspect the event body using SHOW CREATE EVENT db.event_name; correct syntax, ensure objects exist, and grant needed privileges. Finally, DROP and recreate or ALTER the event.
Yes. On a replica, invalid events can stop replication if SQL_LOG_BIN was in effect. Fix the definition on the source and replicate the change, or disable log_bin for the corrective DROP/CREATE to avoid loops.
Galaxy's editor highlights syntax errors and missing objects as you type. Its AI copilot can refactor complex event bodies, reducing the chance of ER_EVENT_COMPILE_ERROR before you run CREATE EVENT.
A missing semicolon, mismatched delimiter, or unsupported SQL statement causes compilation to fail.
Tables, views, or routines named in the event body may have been dropped or renamed.
The DEFINER of the event lacks EXECUTE or table privileges required by statements inside the event.
Using SQL features introduced in later MySQL versions on an older server triggers the compile error.
Inconsistent metadata can break parsing when the event body contains non-ASCII text.
Raised when trying to remove an event that is locked or referenced by replication.
Occurs when altering an event would change its row count metadata unexpectedly.
Indicates runtime failure of an event, unlike 1550 which is compile-time.
General definition error that can surface with stored procedures and events alike.
Ignoring leaves business logic unscheduled. Always fix or drop the faulty event to avoid data drift.
The command only activates scheduling. It will not compile invalid events. You must correct the event body.
Differences in MySQL version, SQL mode, or available privileges lead to environment-specific compilation results.
Yes. Changing the DEFINER to a user with adequate rights avoids ER_EVENT_COMPILE_ERROR caused by missing privileges.
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