List of buyers and their cart contents

It is necessary to output line by line information about each client (identifier and email) along with all the products in their cart (article number and quantity).

-- Table "public.carts"
-- Column     | Type                        | Modifiers
-- -----------|-----------------------------|-----------------------------
-- sku        | bigint                      | not null
-- country    | country_enum                | not null
-- customer_id| bigint                      |
-- amount     | bigint                      | not null
-- updated_at | timestamp without time zone| default now()

-- Table "public.customer"
-- Column | Type  | Modifiers
-- -------|-------|----------------
-- id     | bigint| not null
-- email  | text  | not null