How to Fix 'Lost Connection to MySQL Server During Query' Error in Workbench?

Resolving the "Lost Connection to MySQL Server During Query" Error

Adding an index to a MySQL table in Workbench can sometimes result in the error "Error Code: 2013. Lost connection to MySQL server during query," particularly with lengthy queries. Here's how to fix it:

Solution: Extending the Connection Timeout

Modern MySQL Workbench versions offer a configurable connection timeout. To change this setting:

<code>Go to Edit → Preferences → SQL Editor → DBMS connection read time out (in seconds):</code>

Increase the timeout, for example, to 6000 seconds.

Additional Troubleshooting Steps

1. Limit Rows (Disable): Uncheck the "limit rows" option when dealing with extensive datasets. This can prevent timeouts during searches.
2. Network Stability: Verify your network connection remains consistent and uninterrupted during query execution.
3. MySQL Server Timeout Settings: If the problem persists, review and adjust the timeout settings within the MySQL server itself. Consult the official MySQL documentation for guidance on configuring connection timeouts.

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