Drupal 7 custom drush sanitization hook

MY_MODULE.drush.inc

<?php

/**
* Implements hook_drush_sql_sync_sanitize.
*/
function MY_MODULE_drush_sql_sync_sanitize($source) {
  // Sanitize username
  $users_query = "UPDATE users SET name = CONCAT('name', uid) WHERE uid > 1;";
  drush_sql_register_post_sync_op('sanitise_users_name', dt('Sanitise users name field'), $users_query);

  // Sanitize field
  $field_lastname_query = "UPDATE field_data_field_lastname SET field_lastname_value = CONCAT('lastname', entity_id) WHERE entity_id > 1;";
  drush_sql_register_post_sync_op('sanitise_field_lastname', dt('Sanitise lastname field'), $field_lastname_query);
  
  // Also sanitize revision field
  $field_revision_lastname_query = "UPDATE field_revision_field_lastname SET field_lastname_value = CONCAT('lastname', entity_id) WHERE entity_id > 1;";
  drush_sql_register_post_sync_op('sanitise_field_revision_lastname', dt('Sanitise lastname revision field'), $field_revision_lastname_query);
}