Error
Error Code:
3103
MySQL Error 3103: Inplace Virtual Column Alter Conflict
Description
This error indicates that an `ALTER TABLE` statement is attempting to add or drop a virtual column using the `INPLACE` algorithm while simultaneously performing other modifications to the table. MySQL does not permit combining `INPLACE` operations on virtual columns with other `ALTER TABLE` actions in a single statement due to internal processing limitations.
Error Message
INPLACE ADD or DROP of virtual columns cannot be combined with other ALTER TABLE actions
Known Causes
3 known causesCombined Virtual Column Alterations
An `ALTER TABLE` statement attempts to add or drop a virtual column `INPLACE` while also including other table modifications like adding a regular column or changing an existing column's definition.
Incorrect ALTER TABLE Strategy
Developers may inadvertently combine multiple schema changes into a single `ALTER TABLE` command, unaware of the specific restriction related to `INPLACE` virtual column operations.
Automated Schema Migration Issues
Schema migration tools or scripts might generate a single `ALTER TABLE` statement that combines these conflicting operations, leading to this error.
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