Why Can\'t I Load Data into MySQL? Troubleshooting \'LOAD DATA\' Permission Errors

File Permission Denied: Troubleshooting 'Load Data' Errors in MySQL

When attempting to load data from a flat file dump into a MySQL table using the 'LOAD DATA' command, a user may encounter permission errors even after adjusting table permissions. To resolve this, consider the following:

File Permissions

Check that the user attempting the load has sufficient file system permissions to read the data file. Grant the necessary 'FILE' privilege using:

GRANT FILE ON *.* TO '[user]'@'[host]' IDENTIFIED BY '[password]';

Thread Context

Ensure that the MySQL thread executing the 'LOAD DATA' command has the 'FILE' privilege. The default user for MySQL threads is 'mysql'. To grant the privilege to this user, run:

GRANT FILE ON *.* TO 'mysql'@'[host]' IDENTIFIED BY '[password]';

Additional Considerations

• Verify that the table and the data file have identical schemas, including data types and field order.
• Ensure that the 'LOAD DATA' statement includes all required parameters, including the field delimiter and enclosure characters.
• Double-check the syntax of the 'GRANT' statements, ensuring they target the correct user and table.
• If permissions issues persist, consult the MySQL documentation for further troubleshooting steps.

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