Filtering nested results an OData Query - rest

Question

I have a OData query returning a bunch of items. The results come back looking like this:
{
"d": {
"__metadata": {
"id": "http://dev.sp.swampland.local/_api/SP.UserProfiles.PeopleManager/GetPropertiesFor(accountName=#v)",
"uri": "http://dev.sp.swampland.local/_api/SP.UserProfiles.PeopleManager/GetPropertiesFor(accountName=#v)",
"type": "SP.UserProfiles.PersonProperties"
},
"UserProfileProperties": {
"results": [
{
"__metadata": {
"type": "SP.KeyValue"
},
"Key": "UserProfile_GUID",
"Value": "66a0c6c2-cbec-4abb-9e25-cc9e924ad390",
"ValueType": "Edm.String"
},
{
"__metadata": {
"type": "SP.KeyValue"
},
"Key": "ADGuid",
"Value": "System.Byte[]",
"ValueType": "Edm.String"
},
{
"__metadata": {
"type": "SP.KeyValue"
},
"Key": "SID",
"Value": "S-1-5-21-2355771569-1952171574-2825027748-500",
"ValueType": "Edm.String"
}
]
}
}
}
In reality, there's a lot of items (100+) coming back in the UserProfileProperties collection however I'm only looking for a few where the KEY matches a few items but I can't figure out exactly what I need my filter to be. I've tried $filter=UserProfileProperties/Key eq 'SID' but that still gives me everything. Also trying to figure out how to pull back multiple items.
Ideas?

Answer 1

I believe you forgot about how each of the results have a key, not the UserProfileProperties so UserProfileProperties/Key doesn't actually exist. Instead because result is an array you must check either a certain position (eq. result(1)) or use the oData functions any or all.
Try $filter=UserProfileProperties/results/any(r: r/Key eq 'SID') if you want all the profiles where just one of the keys is SID or use
$filter=UserProfileProperties/results/all(r: r/Key eq 'SID') if you want the profiles where every result has a key equaling SID.