Ich würde hierfür 3 Subselects bemühen
Code:
select ...kt177.Saldo,kt189.saldo,kt194..
from ....
left join (select Konto,Saldo from Kontenstand where Konto=177) kt177...
left join (select Konto,Saldo from Kontenstand where Konto=189) kt189...
left join (select Konto,Saldo from Kontenstand where Konto=189) kt194...
usw.
Gruß
K-H