891 B
@brief ensures that a non-unique skiplist index exists
collection.ensureIndex({ type: "skiplist", fields: [ "field1", ..., "fieldn" ] })
Creates a non-unique skiplist index on all documents using field1, ... fieldn as attribute paths. At least one attribute path has to be given. The index will be non-sparse by default.
To create a sparse unique index, set the sparse attribute to true.
In case that the index was successfully created, an object with the index details, including the index-identifier, is returned.
@EXAMPLE_ARANGOSH_OUTPUT{ensureSkiplist} ~db._create("names"); db.names.ensureIndex({ type: "skiplist", fields: [ "first" ] }); db.names.save({ "first" : "Tim" }); db.names.save({ "first" : "Tom" }); db.names.save({ "first" : "John" }); db.names.save({ "first" : "Tim" }); db.names.save({ "first" : "Tom" }); ~db._drop("names"); @END_EXAMPLE_ARANGOSH_OUTPUT