Difference between revisions of "Returning documents"
From NoSQLZoo
| Line 24: | Line 24: | ||
pp.pprint(list(db.world.find().limit(1))[0]) | pp.pprint(list(db.world.find().limit(1))[0]) | ||
pp.pprint(list(db.world.aggregate([{"$limit":1}]))[0]) | pp.pprint(list(db.world.aggregate([{"$limit":1}]))[0]) | ||
| + | </pre> | ||
| + | </div> | ||
| + | |||
| + | <div class=q data-lang="py3">Returning the <b>n</b>th document | ||
| + | <pre class=def> | ||
| + | n = 50; | ||
| + | pp.pprint(db.world.find_one()[n-1]) | ||
| + | pp.pprint(db.world.find()[n-1]) | ||
| + | pp.pprint(list(db.world.find().skip(n-1).limit(1))[0]) | ||
| + | pp.pprint(list(db.world.aggregate([{"$skip":n-1},{"$limit":1}]))[0]) | ||
</pre> | </pre> | ||
</div> | </div> | ||
Revision as of 16:04, 26 July 2015
#ENCODING
import io
import sys
sys.stdout = io.TextIOWrapper(sys.stdout.buffer, encoding='utf-16')
#MONGO
from pymongo import MongoClient
client = MongoClient()
client.progzoo.authenticate('scott','tiger')
db = client['progzoo']
#PRETTY
import pprint
pp = pprint.PrettyPrinter(indent=4)
#CODE
from bson.code import Code
pp.pprint(db.world.find_one())
pp.pprint(db.world.find()[0])
pp.pprint(list(db.world.find().limit(1))[0])
pp.pprint(list(db.world.aggregate([{"$limit":1}]))[0])
Returning the nth document
n = 50;
pp.pprint(db.world.find_one()[n-1])
pp.pprint(db.world.find()[n-1])
pp.pprint(list(db.world.find().skip(n-1).limit(1))[0])
pp.pprint(list(db.world.aggregate([{"$skip":n-1},{"$limit":1}]))[0])