'[deleted]', 'woocommerce' );
		$updated      = $wpdb->query(
			$wpdb->prepare(
				"UPDATE {$wpdb->prefix}wc_customer_lookup
					SET
						user_id = NULL,
						username = %s,
						first_name = %s,
						last_name = %s,
						email = %s,
						country = '',
						postcode = %s,
						city = %s,
						state = %s
					WHERE
						customer_id = %d",
				array(
					$deleted_text,
					$deleted_text,
					$deleted_text,
					'deleted@site.invalid',
					$deleted_text,
					$deleted_text,
					$deleted_text,
					$customer_id,
				)
			)
		);
		// If the customer row was anonymized, flush the cache.
		if ( $updated ) {
			ReportsCache::invalidate();
		}
	}

	/**
	 * Initialize query objects.
	 */
	protected function initialize_queries() {
		$this->clear_all_clauses();
		$table_name     = self::get_db_table_name();
		$this->subquery = new SqlQuery( $this->context . '_subquery' );
		$this->subquery->add_sql_clause( 'from', $table_name );
		$this->subquery->add_sql_clause( 'select', "{$table_name}.customer_id" );
		$this->subquery->add_sql_clause( 'group_by', "{$table_name}.customer_id" );
	}
}