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Classe « Cursor »

Méthode pymongo.cursor.Cursor.hint

Signature de la méthode hint

def hint(self, index: 'Optional[_Hint]') -> 'Cursor[_DocumentType]' 

Description

help(Cursor.hint)

Adds a 'hint', telling Mongo the proper index to use for the query.

Judicious use of hints can greatly improve query
performance. When doing a query on multiple fields (at least
one of which is indexed) pass the indexed field as a hint to
the query. Raises :class:`~pymongo.errors.OperationFailure` if the
provided hint requires an index that does not exist on this collection,
and raises :class:`~pymongo.errors.InvalidOperation` if this cursor has
already been used.

`index` should be an index as passed to
:meth:`~pymongo.collection.Collection.create_index`
(e.g. ``[('field', ASCENDING)]``) or the name of the index.
If `index` is ``None`` any existing hint for this query is
cleared. The last hint applied to this cursor takes precedence
over all others.

:param index: index to hint on (as an index specifier)

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