Question

I have 2 complex sql statements but they both have the same column name.
I am trying to do a union between both but the

    UNION

says Incorrect syntex near UNION.

not sure if there is anything else necessary to make it work.

Answer 1

The syntax that I usually use for unions is:

select *
from 
(
  (<subquery 1>)
  union all
  (<subquery 2>)
) t

UNION ALL is more efficient than UNION, since it doesn’t check for an eliminate duplicates.