Søger understreng i PostgreSQL

Brug like any :

SELECT  uchastki.kadnum
FROM  uchastki
WHERE kadnum LIKE  ANY(
   SELECT str
   FROM test
WHERE str IS NOT NULL)

Eller måske:

SELECT  uchastki.kadnum
FROM  uchastki
WHERE kadnum LIKE  ANY(
   SELECT '%' || str || '%'
   FROM test
WHERE str IS NOT NULL)

dette er en fin funktion. Du kan bruge forskellige operatorer, for eksempel = any (select ... ) , eller <> all (select...) .