Here are a few question-based titles, focusing on the problem and solution: * MySQL Error: \"Column count of mysql.proc is wrong.\" How to fix it? * MySQL Procedure Error: Mismatched Column

MySQL Column Count Error: "Column count of mysql.proc is wrong. Expected 20, found 16

This error occurs when there is a mismatch between the expected number of columns and the actual number of columns in the mysql.proc table. This table contains information about stored procedures and functions. A corruption in this table can lead to errors when accessing procedures or functions.

Solution:

To resolve this issue, run the following commands:

1. Upgrade MySQL by running:

   <code class="bash">mysql_upgrade -u root -p</code>

2. Restart the MySQL service:

   <code class="bash">service mysqld restart</code>

These commands will verify and repair the mysql.proc table, resolving the column count error.

Additional Information:

• The mysql_upgrade command is used to upgrade the MySQL database software and perform any necessary repairs.
• The service mysqld restart command reloads the MySQL configuration and restarts the service, which can help apply the changes made by mysql_upgrade.
• It's important to back up your MySQL data before running these commands to ensure data integrity.
• If the error persists, you may need to manually verify and repair the mysql.proc table using SQL commands.

The above is the detailed content of Here are a few question-based titles, focusing on the problem and solution: * MySQL Error: \"Column count of mysql.proc is wrong.\" How to fix it? * MySQL Procedure Error: Mismatched Column. For more information, please follow other related articles on the PHP Chinese website!