Използвайте обединение, за да заобиколите ограничението ..
като това :
select TOP 901 *
from openquery(adsisca, '
select givenName,
sn,
sAMAccountName
from ''LDAP://10.1.2.3:389''
where objectCategory = ''Person''
and
objectClass = ''InetOrgPerson''
and
sAMAccountName < ''m''
')
union
select TOP 901 *
from openquery(adsisca, '
select givenName,
sn,
sAMAccountName
from ''LDAP://10.1.2.3:389''
where objectCategory = ''Person''
and
objectClass = ''InetOrgPerson''
and
sAMAccountName >= ''m''
')