SHOW ERRORS - MySQL
Overview
SHOW ERRORS displays the last n errors generated by the MySQL server. It provides information about recent errors that may have occurred during queries or database operations. This command is crucial for debugging errors, identifying performance issues, and optimizing database management.
Syntax
SHOW ERRORS [LIMIT rowCount]
| Parameter | Description |
|—|—|
| LIMIT rowCount | Specifies the maximum number of errors to display. The default value is 10. |
Options/Flags
None.
Examples
Example 1: Display the last 5 errors
SHOW ERRORS LIMIT 5;
Example 2: Display all errors
SHOW ERRORS;
Common Issues
- “No errors found” message: If no errors have occurred, the command will output “No errors found”.
- Truncated error messages: If the error message is too long, it may be truncated. Use the SHOW FULL ERRORS command to display the complete error message.
Integration
SHOW ERRORS can be used in combination with other MySQL commands to:
- Analyze query performance: Use EXPLAIN to generate an execution plan for a query and then SHOW ERRORS to identify any errors or inefficiencies.
- Debug stored procedures or triggers: Use SHOW ERRORS to display errors generated by stored procedures or triggers.
Related Commands
- SHOW WARNINGS: Displays recent warnings generated by the server.
- SHOW FULL ERRORS: Displays complete error messages, including truncated messages.
- SHOW STATUS LIKE ‘Errors’: Provides information about error counts and types.