Error
Error Code:
3192
MySQL Error 3192: FK on Base of Stored Column
Description
This error occurs when you attempt to create a foreign key constraint on a column that is designated as a 'base column' for a `STORED` generated column within the same table. MySQL does not permit foreign keys to be defined on such base columns to maintain data integrity and consistency with the stored values.
Error Message
Cannot add foreign key on the base column of stored column.
Known Causes
3 known causesDirect FK on Stored Column Base
You explicitly tried to add a foreign key constraint on a column that is used in the expression of a `STORED` generated column.
Schema Conflict during Migration
An existing schema or a migration script attempts to define a foreign key on a column that is already a base for a `STORED` generated column.
Misunderstanding Generated Column Types
Confusion between `STORED` generated columns (which have this restriction) and `VIRTUAL` generated columns (whose base columns can have foreign keys).
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