073 Table Variables

SQL

DECLARE @topCustomers Table(
    Email nvarchar(500),
    MoneySpent decimal(18,2)
)

insert into @topCustomers
select top 2
    o.CustomerEmail,
    sum(p.Price * ol.Quantity) as 'Total Money Spent'
from 
    orders o
    join OrderLines ol on ol.OrderId = o.OrderId
    join Products p on p.ProductId = ol.ProductId
group by o.CustomerEmail
order by sum(p.Price * ol.Quantity) desc


select 
    tc.Email,
    FORMAT(o.OrderId,'000000') as 'Order Number',
    o.OrderDate,
    p.Name as 'Product Name',
    ol.Quantity as 'Quantity Ordered'
from @topCustomers tc
    join orders o on tc.Email = o.CustomerEmail
    join OrderLines ol on ol.OrderId = o.OrderId
    join Products p on p.ProductId = ol.ProductId
order by 
    tc.MoneySpent desc,
    o.OrderDate asc