select m.Id
from Items_Main m
left join Items_Ext e on e.Id=m.Id
where m.f0=?p0
and e.f1=?p1
and e.f2=?p2
and e.f3=?p3
and e.f4=?p4

where m.f0=?p0 and e.f1=?p1 and e.f2+0=?p2 and e.f3+0=?p3 and e.f4+0=?p4

left join Items_Ext e on e.Id=m.Id+0