Two select statements turn into one - sql

Question

I have set of two queries. In first query, if is separate from second, I got good results.
First query
SELECT *
FROM
(
SELECT nks.[Id]
, nks.[IdNarudzbe]
, nks.[IdArtikla] as artikal
, nks.[IdUsluge]
, nks.[Naziv]
, nks.Kolicina
, p.Naziv as kupac
, p.Id as kupacId
, p.Adresa
, p.Telefon
, nkz.[BrojDokumenta] AS nalog
, nkz.[BrojDokumentaKroz] AS nalogKroz
, nkz.[RokIsporuke]
, nkz.[IdNastaloOdDokumenta]
, d.Naziv as drzava
FROM [dbo].[NarudzbaKupacaStavke] nks
LEFT JOIN [dbo].[NarudzbeKupacaZaglavlje] nkz
ON nkz.Id = nks.IdNarudzbe
LEFT JOIN dbo.Partneri p
ON nkz.IdKupac = p.Id
LEFT JOIN dbo.Drzave d
ON p.IdDrzava = d.Id
WHERE idArtikla IN ('FP80PUR-08', 'FP80PUR-09', 'FP80PUR-12')
AND nkz.[VrstaDokumenta] = 'PRO'
AND nkz.StatusArhive = 0
--...
from first query nkz.[IdNastaloOdDokumenta] is important to second
SELECT BrojDokumenta
, BrojDokumentaKroz
FROM .[dbo].[NarudzbeKupacaZaglavlje]
where id = nkz.[IdNastaloOdDokumenta]
For ex. In first query I got nkz.[IdNastaloOdDokumenta] = 20. Number 20 I use in second query in where statement, and value I get from BrojDokumenta, I would like to join to first query.
I was wondering if is possible to make one query out of these two. I think I can not union operator because number of column from these two queries don't match.

Answer 1

The same table, and the same columns are already in the first query. Perhaps you want a self-join, like this:
FROM [dbo].[NarudzbaKupacaStavke] nks
LEFT JOIN [dbo].[NarudzbeKupacaZaglavlje] nkz
ON nkz.Id = nks.IdNarudzbe
LEFT JOIN [dbo].[NarudzbeKupacaZaglavlje] nkz2
ON nkz2.Id = nkz.[IdNastaloOdDokumenta]
LEFT JOIN dbo.Partneri p
ON nkz.IdKupac = p.Id
LEFT JOIN dbo.Drzave d
ON p.IdDrzava = d.Id
WHERE idArtikla IN ('FP80PUR-08', 'FP80PUR-09', 'FP80PUR-12')
AND nkz.[VrstaDokumenta] = 'PRO'
AND nkz.StatusArhive = 0