select * from products

select name, category, price, price * 1.3 as price_with_markup, price * 1.5 as price_with_vat
from products 
where in_stock is true and category != 'smartwatch' and price between 100 and 1300;

select name, price, price * 0.85 as price_with_discount
from products 
where price < 100 or price > 1000;

select id, name, category, price from products 
where category in ('tablet', 'smartphone', 'mouse') and price > 100;

select name, category, price from products
where name not ilike '%iphone%';

select name, category, price from products
where name ilike '%pro%';

select name, category, price from products
where name ilike '%mx%'
order by price desc;