<p>MySQL error 1711 appears when the server detects a syntax or semantic problem inside the body of a trigger during compilation or execution.</p>
<p>MySQL Error 1711: ER_ERROR_IN_UNKNOWN_TRIGGER_BODY signals that MySQL found invalid syntax, wrong references, or disallowed statements inside a trigger body. Review and correct the trigger definition, then recreate or alter the trigger to resolve the issue.</p>
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MySQL raises error 1711 when it parses or executes a trigger and locates an invalid statement inside the trigger body. The server stops execution and returns the offending fragment in the message text.
The error occurs during CREATE TRIGGER, ALTER TRIGGER, or the first time the trigger fires. Because the compilation fails, the trigger is marked invalid or never created.
Error 1711 surfaces when the body contains unsupported statements such as COMMIT, references to OLD in INSERT triggers, or syntax errors like missing semicolons.
It can also appear if the trigger references tables, columns, or user variables that do not exist or lack privileges at compilation time.
Locate the exact fragment MySQL reports, then correct the syntax, remove disallowed commands, or adjust object names. Drop and recreate the trigger after editing.
Ensure DELIMITER directives wrap your multi-statement trigger correctly in the client to prevent premature parsing.
Developers frequently see 1711 after copying stored-procedure code into a trigger without removing COMMIT or ROLLBACK lines. Strip those lines and retry.
An AFTER UPDATE trigger that joins to a non-indexed column may reference a column name incorrectly. Confirm the column exists and is prefixed properly.
Validate trigger syntax in a staging database before pushing to production. Use MySQL SHOW TRIGGERS to double-check trigger status.
Galaxy's context-aware SQL editor highlights disallowed statements and missing objects in real time, reducing the chance of pushing faulty triggers.
Errors 1064, 1235, and 1442 often accompany 1711 when triggers contain syntax errors or forbidden table modifications. Similar debugging steps apply.
Unterminated statements, missing END keywords, or delimiter issues lead MySQL to flag the trigger body as unknown.
Commands like COMMIT, ROLLBACK, or SAVEPOINT are prohibited inside triggers and immediately raise error 1711.
Referencing non-existent tables, columns, or using OLD in INSERT triggers causes compilation failure.
The DEFINER user lacks required privileges on tables used in the trigger, so compilation aborts.
General syntax error that often pinpoints the same faulty line found in 1711.
ER_BAD_DB_ERROR appears if a trigger references a database that does not exist.
Table is read only: occurs when a trigger tries to update the same table it fires on in a way that is not permitted.
No. MySQL does not allow COMMIT, ROLLBACK, or START TRANSACTION inside triggers. Removing them resolves error 1711.
Run SHOW CREATE TRIGGER trigger_name to inspect the stored definition and locate errors.
Improper delimiter settings cause false syntax errors. Always set a non-default delimiter before CREATE TRIGGER when using multi-statement bodies.
If compilation fails during CREATE TRIGGER, MySQL has not stored the trigger yet, so it labels the object as unknown in the message.
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