arangosh> db.ids.ensureIndex({ type: "skiplist", fields: [ "name.first", "name.last" ], unique: true });
{
"deduplicate" : true,
"fields" : [
"name.first",
"name.last"
],
"id" : "ids/18278",
"isNewlyCreated" : true,
"sparse" : false,
"type" : "skiplist",
"unique" : true,
"code" : 201
}
arangosh> db.ids.save({ "name" : { "first" : "hans", "last": "hansen" }});
{
"_id" : "ids/18281",
"_key" : "18281",
"_rev" : "_WgE9YdC--_"
}
arangosh> db.ids.save({ "name" : { "first" : "jens", "last": "jensen" }});
{
"_id" : "ids/18285",
"_key" : "18285",
"_rev" : "_WgE9YdG--_"
}
arangosh> db.ids.save({ "name" : { "first" : "hans", "last": "jensen" }});
{
"_id" : "ids/18288",
"_key" : "18288",
"_rev" : "_WgE9YdK--_"
}
arangosh> db.ids.save({ "name" : { "first" : "hans", "last": "hansen" }});
[ArangoError 1210: unique constraint violated - in index 18278 of type skiplist over ["name.first","name.last"]; conflicting key: 18281]