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Description

This error indicates that MariaDB encountered a problem while trying to compile the SQL statements within the body of a scheduled event. It typically occurs when creating or altering an event, preventing the event from being successfully defined and executed.

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Error Message

Error during compilation of event's body

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Known Causes

4 known causes

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SQL Syntax Errors

The SQL statements within the `DO` block of the event contain incorrect syntax, keywords, or structure.

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Invalid Object References

The event body attempts to access tables, views, procedures, or functions that do not exist or are misspelled.

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Insufficient Privileges

The user defining the event or the event's definer lacks the necessary permissions to execute the statements within the event body.

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Data Type Mismatches or Invalid Expressions

Operations within the event body involve incompatible data types or expressions that cannot be evaluated correctly during compilation.

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Solutions

3 solutions available

1. Review and Correct Event Syntax easy

The most common cause is a syntax error within the event's SQL body.

1

Identify the problematic event by querying the `mysql.event` table.

SELECT EVENT_SCHEMA, EVENT_NAME, STATEMENT FROM mysql.event WHERE STATUS = 'SLAVESKIPPED' OR STATUS = 'ERROR';

2

Examine the `STATEMENT` column for the identified event. Look for common SQL syntax errors such as missing semicolons, incorrect keywords, unbalanced parentheses, or invalid function calls.

SELECT EVENT_SCHEMA, EVENT_NAME, DEFINER, EVENT_BODY, EVENT_DEFINITION FROM information_schema.events WHERE EVENT_SCHEMA = 'your_schema_name' AND EVENT_NAME = 'your_event_name';

3

Correct the syntax errors in the event definition. You can use `ALTER EVENT` to modify the event.

ALTER EVENT your_schema_name.your_event_name ON SCHEDULE EVERY 1 DAY STARTS CURRENT_TIMESTAMP + INTERVAL 1 HOUR DO
  -- Corrected SQL statement here
  UPDATE your_table SET some_column = 'new_value' WHERE id = 1;

4

If you are unsure about the exact syntax, consider dropping and recreating the event with the corrected definition.

DROP EVENT your_schema_name.your_event_name;
CREATE EVENT your_schema_name.your_event_name
ON SCHEDULE EVERY 1 DAY STARTS CURRENT_TIMESTAMP + INTERVAL 1 HOUR
DO
  -- Corrected SQL statement here
  UPDATE your_table SET some_column = 'new_value' WHERE id = 1;

2. Check for Reserved Keywords and Function Usage medium

Using reserved SQL keywords as identifiers or incorrect function arguments can cause compilation failures.

1

Carefully review the event's `EVENT_DEFINITION` for any words that might be reserved keywords in MariaDB. If you've used a keyword as a table or column name, enclose it in backticks (``).

SELECT EVENT_SCHEMA, EVENT_NAME, EVENT_DEFINITION FROM information_schema.events WHERE EVENT_SCHEMA = 'your_schema_name' AND EVENT_NAME = 'your_event_name';

2

Verify that all functions used within the event body have the correct number and types of arguments. Consult the MariaDB documentation for the specific functions you are using.

SELECT EVENT_SCHEMA, EVENT_NAME, EVENT_DEFINITION FROM information_schema.events WHERE EVENT_SCHEMA = 'your_schema_name' AND EVENT_NAME = 'your_event_name';

3

If you find issues, modify the event definition using `ALTER EVENT` to escape keywords or correct function arguments.

ALTER EVENT your_schema_name.your_event_name ON SCHEDULE EVERY 1 DAY STARTS CURRENT_TIMESTAMP + INTERVAL 1 HOUR DO
  -- Example: Escaping a reserved keyword 'order'
  SELECT `order` FROM your_table WHERE id = 1;

3. Investigate Server Configuration and Version Compatibility advanced

Less common, but outdated versions or specific server configurations might contribute to event compilation issues.

1

Check your current MariaDB server version.

SELECT VERSION();

2

Visit https://mariadb.com/kb/en/documentation/ and search for your version and 'event compilation failure'.

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3

Locate your configuration file (e.g., `/etc/mysql/my.cnf` or `/etc/my.cnf`).

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4

# Example: Backup configuration file
cp /etc/mysql/my.cnf /etc/mysql/my.cnf.bak

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5

# On systemd-based systems
systemctl restart mariadb

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Related Errors

5 related errors

MariaDB Error 1550: Event Body Compilation Failure