mit zwei Views sollte es funktionieren:
Delphi-Quellcode:
Create View 'test1' as
select s_vl_felgengroesse as Feld from Reifenlager t1 union
select s_vr_felgengroesse as Feld from Reifenlager t2 union
select s_hr_felgengroesse as Feld from Reifenlager t3 union
select s_hl_felgengroesse as Feld from Reifenlager t4
Create View 'test2' as
Select Feld from test1
order by feld