Error
Error Code:
1856
MySQL Error 1856: FTS_DOC_ID modification
Description
This error occurs when attempting to drop or rename the `FTS_DOC_ID` column in a MySQL table that uses Full-Text Search. This column is an internal system identifier managed by MySQL and cannot be directly altered by users.
Error Message
Cannot drop or rename FTS_DOC_ID
Known Causes
3 known causesDirect Column Manipulation
Attempting to directly drop or rename the `FTS_DOC_ID` column via SQL commands, which is prohibited as it's an internal system column.
Schema Migration Tool Conflict
Automated schema migration tools or scripts trying to standardize or modify column names, inadvertently targeting the protected `FTS_DOC_ID`.
Incorrect ALTER TABLE Syntax
Executing an `ALTER TABLE` statement with syntax that attempts to drop or rename `FTS_DOC_ID`, an operation not supported for this special 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