LDAP - filter records with two attributes equal (or different) -

i want filter ldap records find entries 2 attributes equal (also different).

let assume have records userid.

userid=10

userid=15

each record have name , surname , want filter people identical name , surname.

i can filter people particular name using following filter

(&(name=mark)(surname=mark))

but filter not correct

(=(name)(surname))

nor this

name=surname

this not possible in ldap. ldap not support relational queries on attribute level of same entry.

JVParth