SQL QUERY:
SELECT riik AS yhendlist, riik_id FROM riigid
UNION SELECT teised_vormid, riik_id FROM riigid WHERE paral_trykk = 1
ORDER BY yhendlist ASC;
ERROR: operator does not exist: character varying = integer
LINE 2: ...ECT teised_vormid, riik_id FROM riigid WHERE paral_trykk = 1
^
HINT: No operator matches the given name and argument types. You might need to add explicit type casts.