If you have specified a collation at the collection level, then: Specifies the collation for the index.Ĭollation allows users to specify language-specific rules for string comparison, such as rules for lettercase and accent marks. group in the same bucket those location values that are within the specified number of units to each other. The default value is 180.0.įor geoHaystack indexes, specify the number of units within which to group the location values i.e. For 2d indexes, the upper inclusive boundary for the longitude and latitude values. For 2d indexes, the lower inclusive boundary for the longitude and latitude values. The bits value ranges from 1 to 32 inclusive. For 2d indexes, the number of precision of the stored geohash value of the location data. Users can use this option to override the default version number. See Use any Field to Specify the Language for a Document for an example. For text indexes, the name of the field, in the collection’s documents, that contains the override language for the document. See Text Search Languages for the available languages and Specify a Language for Text Index for more information and examples.
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For text indexes, the language that determines the list of stop words and the rules for the stemmer and tokenizer. See Control with Weights to adjust the scores. You can specify weights for some or all the indexed fields. The weight is an integer ranging from 1 to 99,999 and denotes the significance of the field relative to the other indexed fields in terms of the score. For text indexes, a document that contains field and weight pairs. You can specify a partialFilterExpression option for all MongoDB index types. See Partial Indexes for more information. If specified, the index only references documents that match the filter expression.
![create index on geodist mongo create index on geodist mongo](https://www.indexoncensorship.org/wp-content/uploads/slider3/museo-de-la-disidencia-en-cuba.jpeg)
The option is unavailable for hashed indexes.
#CREATE INDEX ON GEODIST MONGO UPDATE#
Creates a unique index so that the collection will not accept insertion or update of documents where the index key value matches an existing value in the index. Builds the index in the background so the operation does not block other database activities.
![create index on geodist mongo create index on geodist mongo](https://dreamingechoes.github.io/images/2015-11-02-geosearch-with-mongodb-and-geocoder/screenshot3.png)
If specifying direction, specify 1 for ascending or -1 for descending.Ī name that uniquely identifies the index. For each field, specify a key-value pair in which the key is the name of the field to index and the value is either the index direction or index type. Changed in version 3.0: The dropDups option is no longer available.