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arangodb/Documentation/Examples/ensureUniqueSkiplist.generated

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arangosh> db.ids.ensureUniqueSkiplist("myId");
{
"id" : "ids/653415836",
"type" : "skiplist",
"fields" : [
"myId"
],
"unique" : true,
"sparse" : false,
"isNewlyCreated" : true,
"code" : 201
}
arangosh> db.ids.save({ "myId": 123 });
{
"_id" : "ids/653677980",
"_rev" : "653677980",
"_key" : "653677980"
}
arangosh> db.ids.save({ "myId": 456 });
{
"_id" : "ids/653874588",
"_rev" : "653874588",
"_key" : "653874588"
}
arangosh> db.ids.save({ "myId": 789 });
{
"_id" : "ids/654071196",
"_rev" : "654071196",
"_key" : "654071196"
}
arangosh> db.ids.save({ "myId": 123 });
[ArangoError 1210: cannot create document, unique constraint violated]