When importing data from a CSV file into a WordPress database, you can set the primary key for the imported data by following these general steps:

  1. Prepare the CSV file: Make sure that the CSV file has a column for the primary key and that the values in this column are unique. Also, the primary key column should match the name of the primary key field in the WordPress database table.
  2. Write a script: Write a PHP script that reads the CSV file, and for each row, insert the data into the WordPress database table, making sure to include the primary key value.
  3. Import the data: Use the script to import the data from the CSV file into the WordPress database table.

Here is a sample code snippet that shows how you can import data from a CSV file into a WordPress database table, using the primary key column as the primary key for the imported data:

$file = fopen("path/to/file.csv", "r");

global $wpdb;

while (($data = fgetcsv($file, 1000, ",")) !== FALSE) {
            'id' => $data[0],
            'column1' => $data[1],
            'column2' => $data[2],

It’s important to note that this is a basic example and you may need to adjust the script to match your specific requirements and use the appropriate functions to validate and sanitize the data before inserting it into the database.

It’s also important to back up the database before running any script that modify the data in the database.

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