Question

I have a table variable that holds orderID, UnitID and OrderServiceId (it is already populated via a query with insert statement).

I then have a query under this that returns 15 columns which also include the OrderId, UnitId, OrderServiceId

I need to only return the rows from this query where the same combination of OrderId, UnitId, and OrderServiceId are not in the table variable.

Answer 1

You can use NOT EXISTS. e.g.

FROM YourQuery q
WHERE NOT EXISTS 
(
SELECT * FROM @TableVar t
WHERE t.OrderId = q.OrderId
  and t.UnitId = q.UnitId 
  and t.OrderServiceId=q.OrderServiceId
)