Show me the id of customer with first name Astrid, and last name Gruber!
select id from customers where first_name = "Astrid" and last_name = "Gruber";
What is her address?
select address from customers where first_name = "Astrid" and last_name = "Gruber";
How about her company?
select company from customers where first_name = "Astrid" and last_name = "Gruber";
Just show me her email and phone number?
select email, phone from customers where first_name = "Astrid" and last_name = "Gruber";