080 Dynamic SQL

SQL

--select * from Products

--EXEC('select * from Products')

DECLARE @topCount INT = 6

DECLARE @SQL nvarchar(max)

SET @SQL = 
'
select top ' + CAST(@topCount AS nvarchar(10)) + '
    o.CustomerEmail,
    sum(p.Price * ol.Quantity) as ''Total Money Spent''
    into #tempTopCustomers
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.CustomerEmail,
    FORMAT(o.OrderId,''000000'') as ''Order Number'',
    o.OrderDate,
    p.Name as ''Product Name'',
    ol.Quantity as ''Quantity Ordered''
from #tempTopCustomers tc
    join orders o on tc.CustomerEmail = o.CustomerEmail
    join OrderLines ol on ol.OrderId = o.OrderId
    join Products p on p.ProductId = ol.ProductId
order by 
    tc.[Total Money Spent] desc,
    o.OrderDate asc

drop table #tempTopCustomers'
    

EXEC(@SQL)