Transformation¶
With fields¶
Exclude documents that do not have the specified fields and return only those fields.
Functionally, this is identical to has_fields followed by pluck.
Query('movies').with_fields('name', 'year', 'rating')
Functionally, this is identical to hasFields followed by pluck.
new Query('movies').withFields('name', 'year', 'rating')
Has fields¶
Test if a document has the specified fields, filtering out any that do not.
Query('movies').has_fields('name', 'year', 'rating')
new Query('movies').hasFields('name', 'year', 'rating')
Order by¶
Sort the documents by the specified field.
Query('movies').order_by('year')
new Query('movies').orderBy('year')
Skip¶
Skip a number of documents from the head of the sequence
Query('movies').skip(5)
new Query('movies').skip(5)
Limit¶
End the sequence after the givin number of documents
Query('movies').limit(10)
new Query('movies').limit(10)
Slice¶
Return the documents within the specified range
Query('movies').slice(5, 15)
new Query('movies').slice(5, 15)
Sample¶
Select a given number of elements from a sequence with uniform random distribution
Query('movies').sample(10)
new Query('movies').sample(10)