How to Resolve MySQL Error #2014: \"Commands out of Sync\"?

MySQL Error #2014: Understanding the "Commands out of Sync" Issue

When working with MySQL, you may encounter the #2014 error, which prompts "Commands out of sync; you can't run this command now." This error occurs when the sequence of commands sent to the database is not in sync with the current state of the server.

Causes of the Error

The error typically occurs when you attempt to execute a new query without properly handling the results of a previous query. This can happen in various scenarios, including:

• Failing to call mysql_use_result() or mysql_store_result() to retrieve the results of a data-returning query before executing a subsequent query.
• Using mysql_use_result() and attempting to execute a new query before calling mysql_free_result() to release the results of the previous query.
• Encountering a problem in the tool you're using, such as MySQL-Query Browser.

Resolution

To resolve the error, ensure that you're properly handling the results of data-returning queries before executing additional queries. This involves using mysql_use_result() or mysql_store_result() to fetch the results and mysql_free_result() to release the memory used for those results.

If you're still experiencing the error, consider switching to a different tool such as MySQL-Fron, as suggested by a MySQL forum user.

The above is the detailed content of How to Resolve MySQL Error #2014: \"Commands out of Sync\"?. For more information, please follow other related articles on the PHP Chinese website!