I can't find any information relating to this on Amazon's site, but is this possible?
Sure you can,
I am using PHP PostgreSQL to query AWS Redshift
For those who are looking for examples:
$connection = new PDO( 'pgsql:dbname=<db_name>;host=<redshift_cluster_host>;port=5439', '<master_user_name>', '<master_user_password>' ); $statement = $connection->prepare('<your_query>'); $statement->execute(); $result = $statement->fetch();
Also, ensure you configured your cluster security groups correctly (under Security tab in the AWS Redshift admin).