mongoengine distinct
As of MongoEngine 0.8 the querysets utilise a local cache. So iterating it multiple times will only cause a single query. If this is not the desired behaviour you can ... ,:returns number of deleted documents. distinct (field)¶. Return a list of distinct values for a given field. Parameters: field – the field to select distinct values from ... , When trying to use distinct() I kept getting an empty BaseList, and then I realized that we are supposed to use the name of the field in db, ..., You can use .distinct() to get all the unique values of items instead of doing groupby . Return a list of distinct values for a given field. You need ...,First of all, it's only possible to get distinct values on some field (only one field) as explained in MongoDB documentation on Distinct. Mongoengine's QuerySet ... ,(mongoengine.Document method) · (mongoengine.queryset.QuerySet method) · DictField (class in mongoengine.fields) · distinct() (mongoengine.queryset. ,The best way to deal with this is to use MongoDB's native features. There are two operators that you could use: 1) Using $nin query out any votes that I have ... , Recently, maybe after a software upgrade, I've encountered a problem: distinct() filtering now returns a dictionary collection rather then a ..., You want MongoDB (and thus pymongo's) cursor.distinct() method. Sample code would look like: from pymongo import MongoClient query ..., DateTimeField(required=True) value = db.FloatField(required=True) And using distinct on field value will lead to unexpected result: In [11]: ...
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 mongoengine distinct 相關參考資料
2.5. Querying the database — MongoEngine 0.16.3 documentation
As of MongoEngine 0.8 the querysets utilise a local cache. So iterating it multiple times will only cause a single query. If this is not the desired behaviour you can ... http://docs.mongoengine.org 3. API Reference — MongoEngine 0.16.3 documentation
:returns number of deleted documents. distinct (field)¶. Return a list of distinct values for a given field. Parameters: field – the field to select distinct values from ... http://docs.mongoengine.org distinct() doesn't resolve db_field correctly · Issue #260 · MongoEngine ...
When trying to use distinct() I kept getting an empty BaseList, and then I realized that we are supposed to use the name of the field in db, ... https://github.com Group By in mongoengine EmbeddedDocumentListField - Stack Overflow
You can use .distinct() to get all the unique values of items instead of doing groupby . Return a list of distinct values for a given field. You need ... https://stackoverflow.com How to query for distinct results in mongodb with python? - Stack ...
First of all, it's only possible to get distinct values on some field (only one field) as explained in MongoDB documentation on Distinct. Mongoengine's QuerySet ... https://stackoverflow.com Index — MongoEngine 0.16.3 documentation
(mongoengine.Document method) · (mongoengine.queryset.QuerySet method) · DictField (class in mongoengine.fields) · distinct() (mongoengine.queryset. http://docs.mongoengine.org MongoDB, MongoEngine: unique list items - Stack Overflow
The best way to deal with this is to use MongoDB's native features. There are two operators that you could use: 1) Using $nin query out any votes that I have ... https://stackoverflow.com MongoEngine distinct() filtering and EmbeddedDocument - Stack Overflow
Recently, maybe after a software upgrade, I've encountered a problem: distinct() filtering now returns a dictionary collection rather then a ... https://stackoverflow.com MongoEngine query unique attributes - Stack Overflow
You want MongoDB (and thus pymongo's) cursor.distinct() method. Sample code would look like: from pymongo import MongoClient query ... https://stackoverflow.com Queryset distinct filter not working · Issue #295 · MongoEngine ...
DateTimeField(required=True) value = db.FloatField(required=True) And using distinct on field value will lead to unexpected result: In [11]: ... https://github.com |