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Return a List of All Indexes¶
When performing maintenance you may want to check which indexes exist
on a collection. In the mongo
shell, you can use the
getIndexes()
method to return a list of the
indexes on a collection.
See also
Index Concepts and Indexing Tutorials for more information about indexes in MongoDB and common index management operations.
List all Indexes on a Collection¶
To return a list of all indexes on a collection, use the
db.collection.getIndexes()
method or a similar
method for your driver.
For example, to view all indexes on the people
collection:
List all Indexes for a Database¶
To list all indexes on all collections in a database, you
can use the following operation in the mongo
shell:
MongoDB 3.0 deprecates direct access to the system.indexes
collection.
For MongoDB 3.0 deployments using the WiredTiger storage engine, if you run db.getCollectionNames()
and db.collection.getIndexes()
from a
version of the mongo
shell before 3.0 or a version of the
driver prior to 3.0 compatible version, db.getCollectionNames()
and db.collection.getIndexes()
will return no data, even if
there are existing collections and indexes. For more information, see
WiredTiger and Driver Version Compatibility.