Error
Error Code:
1166
MySQL Error 1166: Invalid Column Reference
Description
This error indicates that a SQL query or statement is attempting to reference a column name that does not exist or is misspelled within the specified table. It commonly occurs during data retrieval, insertion, or update operations when the column specified in the query cannot be found in the target table.
Error Message
Incorrect column name '%s'
Known Causes
4 known causesTypographical Error
The column name specified in the SQL query contains a spelling mistake, preventing MySQL from finding a matching column.
Non-Existent Column
The referenced column simply does not exist in the table being queried, or it belongs to a different table not correctly included or joined in the query.
Case Sensitivity Mismatch
The column name's casing in the query does not match the actual column name in the database, which can be an issue on case-sensitive file systems or collations.
Incorrect Table Alias
A table alias is used incorrectly, or a column is referenced with an alias that doesn't correspond to the table containing that column.
Solutions
Coming SoonDetailed step-by-step solutions for this error are being prepared. In the meantime, try these general troubleshooting tips:
General Troubleshooting Tips
- Check the error message carefully for specific details
- Review recent changes that might have caused the error
- Search for the exact error code in the official documentation
- Check log files for additional context
- Try restarting the application or service