Error
Error Code:
3108
MySQL Error 3108: Generated Column Dependency Conflict
Description
This error occurs when you attempt to modify or drop a base column that is referenced by one or more generated columns in the same table. MySQL prevents such operations to maintain data integrity and ensure the consistency of generated column values, as their computation relies on the base column's data.
Error Message
Column '%s' has a generated column dependency.
Known Causes
3 known causesDropping a Referenced Column
You attempted to remove a base column that is explicitly used in the expression defining a generated column.
Renaming a Dependent Column
An operation was performed to rename a column whose original name is part of the generated column's definition.
Altering a Base Column's Properties
The data type or other attributes of a column were modified, which could invalidate the expression of a dependent generated 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