Coding⏱️ 2 min read📅 2026-05-30

How to Fix: Error renaming a column in MySQL

Error renaming a column in MySQL due to duplicate column name.

Quick Answer: The issue is caused by having two columns with the same name, 'AI' and 'PK', which are not allowed. Remove or rename one of them before attempting to rename the 'manufacturerid' column.

The error you're encountering while attempting to rename a column in MySQL through PHPMyAdmin is due to the presence of spaces in your table name or column alias. The issue arises when MySQL encounters a space in the table or column names, causing it to interpret them as separate entities rather than a single identifier.

🚀 How to Resolve This Issue

Method 1: Using Backticks

  1. Step 1: Surround the column name with backticks (`) to prevent MySQL from interpreting spaces as separators.

Method 2: Renaming Through SQL

  1. Step 1: Execute the following SQL command to rename the column using the `RENAME TABLE` statement:
Rename table xyz to xyz_new, then execute: 
RENAME TABLE xyz TO xyz_new;
and finally drop the original table.

💡 Conclusion

By following these steps, you should be able to successfully rename your column in MySQL without encountering any issues related to spaces in table or column names.

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