Question

hie all,

my query is this

select * from [order] where createdon<getdate()-7
and orderid between 
(select top 1 orderid from [order] where createdon<getdate()-7 order by orderid) as oId
and oId+100 order by orderid

It is giving error. please tell me where is it going wrong

my intention is to get 100 orders from order table which are older than 7 days. and please dont suggest fetching it using row_number

Thanks

Answer 1

You can’t alias expressions in the WHERE clause. But since your subquery returns just one row, you could cross join it to the [order] table and filter on the returned top orderid value like this:

SELECT [order].*
FROM [order]
CROSS JOIN (
  SELECT TOP 1 orderid
  FROM [order]
  WHERE createdon < GETDATE() - 7
  ORDER BY orderid
) toporder
WHERE [order].createdon < GETDATE() - 7
  AND [order].orderid BETWEEN toporder.orderid AND toporder.orderid + 100