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If you are encountering duplicate entry errors while importing a database dump using the mysql command, it means that the dump file contains data that already exists in the target database. MySQL enforces unique constraints and primary keys, and when it encounters duplicate data that violates these constraints, it throws a duplicate entry error.

Here's how you can handle duplicate entry errors during the database import:

Review the Error Messages:
When MySQL encounters duplicate entries, it typically provides an error message that includes information about which table and which entry is causing the issue. This message can be helpful in identifying the problem.

Update the Dump File:
If you have control over the dump file, you can edit it to either remove or modify the duplicate entries before importing it. Look for the problematic data in the SQL dump file and make the necessary adjustments.

Use the --ignore Option:
You can use the --ignore option with the mysql command to ignore duplicate key errors during the import. This means that the import process will continue even if it encounters duplicate entries, and it will skip them. However, be cautious with this approach, as it may result in incomplete or inconsistent data.

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mysql -u root -p --ignore wiki < closnaql_wiki.sql
Keep in mind that using the --ignore option will only skip the specific duplicate entry errors encountered during the import process.

Use the --force Option:
Another option is to use the --force option with the mysql command. This option is similar to --ignore, but it attempts to modify the conflicting records to avoid the duplicate entry error.

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mysql -u root -p --force wiki < closnaql_wiki.sql
Like --ignore, be cautious when using --force as it can potentially modify your data.

Remove or Truncate the Target Database:
If you are sure that you want to replace the existing data with the data from the dump file, you can remove or truncate the target database before importing. Be extremely cautious when doing this, as it will delete all existing data in the database.

To remove the database:

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mysql -u root -p -e "DROP DATABASE wiki;"
To truncate all tables in the database (but keep the database structure intact):

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mysql -u root -p -e "USE wiki; SET FOREIGN_KEY_CHECKS = 0; \
SELECT CONCAT('TRUNCATE TABLE ', table_name, ';') \
FROM information_schema.tables \
WHERE table_schema = 'wiki';" | mysql -u root -p wiki
After removing or truncating the database, you can import the dump file without encountering duplicate entry errors.

Choose the method that best suits your requirements and ensures data integrity in your MySQL database. Always make sure to back up your data before making any significant changes.

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