Question

I’m trying to find a workaround (hack) to some limitations preventing me from using a temporary table or a table variable in my SQL query.

I have a real table (technically it’s a derived table that results from an UNPIVOT of a poorly designed table) which lacks several necessary fields. I need to hardcode these fields into the result until we can cleanup the database issue.

Given a table like:

tblEntity
ID | Name
 1 |  One
 2 |  Two

I need to join several fields such as:

ID | Order
 1 |     2
 2 |     1

The join would result in:

ID | Name | Order
 1 |  One |     2
 2 |  Two |     1

My question is: can I join tblEntity to a resultset created like:

SELECT 1, 2
UNION ALL
SELECT 2, 1

Is it possible to join? If so, what is the syntax?

Answer 1

select te.*, t.Ord from tblEntity te
inner join (
    SELECT 1 as Id, 2 as Ord
    UNION ALL
    SELECT 2, 1
) t on te.ID = t.Id