wp do sql query from function

1<?php
2// 1st Method - Declaring $wpdb as global and using it to execute an SQL query statement that returns a PHP object
3global $wpdb;
4$results = $wpdb->get_results( "SELECT * FROM {$wpdb->prefix}options WHERE option_id = 1", OBJECT );
5

1<?php
2// 2nd Method - Utilizing the $GLOBALS superglobal. Does not require global keyword ( but may not be best practice )
3$results = $GLOBALS['wpdb']->get_results( "SELECT * FROM {$wpdb->prefix}options WHERE option_id = 1", OBJECT );
4