MariaDB Error 1856: Cannot Alter Full-Text Search ID

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Description

This error occurs when an attempt is made to directly modify, rename, or drop the internal `FTS_DOC_ID` column in a MariaDB table. The `FTS_DOC_ID` column is a system-managed component essential for the proper functioning of Full-Text Search indexes and cannot be altered by users.

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Error Message

Cannot drop or rename FTS_DOC_ID

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Known Causes

3 known causes

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Direct Alteration of FTS_DOC_ID

A SQL `ALTER TABLE` statement explicitly attempts to drop, rename, or modify the `FTS_DOC_ID` column, which is an internal system column.

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Automated Schema Migration

Third-party schema migration or synchronization tools may try to modify the `FTS_DOC_ID` column, not recognizing its system-managed nature.

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Misconception of FTS Internals

Users might be unaware that `FTS_DOC_ID` is a special system-managed column integral to Full-Text Search functionality and treat it as a regular user-defined column.

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Solutions

Coming Soon

Detailed 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

Find Help

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Related Errors

5 related errors