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# D8 Search API Solr: Wipe a Solr core completely NEEDS EDITING
drush --uri=[domain] ev '
  $search_api_server_machine_name = "acquia_search_server"; ## EDIT THIS IF NEEDED
  $backend = Drupal\search_api\Entity\Server::load($search_api_server_machine_name)->getBackend();
  $connector = $backend->getSolrConnector();
  # Code based on \Drupal\search_api_solr\Plugin\search_api\backend\SearchApiSolrBackend::deleteAllIndexItems()
  $query = "solrfieldname:solrfieldvalue";    ## REPLACE "solrfieldname:solrfieldvalue" WITH "*:*" TO DELETE EVERYTHING
  $update_query = $connector->getUpdateQuery();
  $update_query->addDeleteQuery($query);
  $update_query->addOptimize();
  $connector->update($update_query);
'