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db.collection.getIndexes()

On this page

  • Definition
  • Behavior
  • Required Access
  • Output

Definition

db.collection.getIndexes()

Important

mongosh Method

This page documents a mongosh method. This is not the documentation for database commands or language-specific drivers, such as Node.js.

For the database command, see the listIndexes command.

For MongoDB API drivers, refer to the language-specific MongoDB driver documentation.

For the legacy mongo shell documentation, refer to the documentation for the corresponding MongoDB Server release:

Returns an array that holds a list of documents that identify and describe the existing indexes on the collection, including hidden indexes.

You must call db.collection.getIndexes() on a collection. For example:

db.collection.getIndexes()

Change collection to the name of the collection for which to return index information.

Behavior

Client Disconnection

Starting in MongoDB 4.2, if the client that issued db.collection.getIndexes() disconnects before the operation completes, MongoDB marks db.collection.getIndexes() for termination using killOp.

Replica Set Member State Restriction

Starting in MongoDB 4.4, to run on a replica set member, listIndexes operations require the member to be in PRIMARY or SECONDARY state. If the member is in another state, such as STARTUP2, the operation errors.

In previous versions, the operations also run when the member is in STARTUP2. The operations wait until the member transitioned to RECOVERING.

Wildcard Indexes

Starting in MongoDB 6.3, 6.0.5, and 5.0.16, the wildcardProjection field stores the index projection in its submitted form. Earlier versions of the server may have stored the projection in a normalized form.

The server uses the index the same way, but you may notice a difference in the output of the listIndexes and db.collection.getIndexes() commands.

Required Access

To run db.collection.getIndexes() when access control is enforced, usesrs must have privileges to listIndexes on the collection.

The built-in role read provides the required privileges to run db.collection.getIndexes() for the collections in a database.

Output

db.collection.getIndexes() returns an array of documents that hold index information for the collection. For example:

Note

Starting in MongoDB 4.4, db.collection.getIndexes() no longer includes the ns field.

[
   {
      "v" : 2,
      "key" : {
         "_id" : 1
      },
      "name" : "_id_"
   },
   {
      "v" : 2,
      "key" : {
         "status" : 1
      },
      "name" : "status_1"
   },
   {
      "v" : 2,
      "key" : {
         "points" : 1
      },
      "name" : "points_1"
   }
]

Index information includes the keys and options used to create the index. The index option hidden, available starting in MongoDB 4.4, is only available if the value is true.

For information on the keys and index options, see db.collection.createIndex().

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