EE MySQL DB selector/query

ee-mysql-db-selector-query.php

<?php
$data = array();

$query = $this->EE->db->select('member_id')
       ->from('db_table')
       ->where('entry_id', $entry_id)
       ->where_in('dummy_column', array_keys($another_data))
       ->get();

foreach( $query->result() as $row )
{
    $data[] = $row->member_id;
}