getIndexes() command - View JSON indexes for a collection command

Returns index information that identifies and describes the existing indexes for a collection.

Syntax diagram

Command parameters

filter

This optional parameter specifies the selection criteria for indexes. The options are as follows:

ID: Get details for the index with the specified identifier.
key: Get details for indexes with the specified attribute.
name: Get details for the index with the specified name.

Example

View a list of all indexes and type markers in the specified namespace:

db.books.getIndexes()

Sample output is as follows:

[{"v":0,"_id":57,"key":{"_id_":1},"ns":"TEST.books","name":"_id_","unique":true}, 
{"v":0,"_id":63,"key":{"author":1},"ns":"TEST.books","name":"books_xauthor","unique":false}]

Example 2: View a list of all indexes and type markers in the specified namespace:

db.books.getIndexes({"name": "_id_"})

Sample output is as follows:

[{"v":0,"_id":57,"key":{"_id_":1},"ns":"TEST.books","name":"_id_","unique":true}]