Python MongoDB sauki daga cikin

A cikin MongoDB, a ɗauki shi amfani da find da findOne don sauki daga cikin ɗanɗin.

dansiyar SELECT don sauki daga cikin ɗanɗin cikin MySQL.

sauki daga cikin

Domin sauki daga cikin MongoDB, a ɗauki shi amfani da find_one() Method.

find_one() Method sauki daga cikin daga cikin farko.

Shafi

sauki daga cikin ɗanɗin "customers" da ke cikin ɗanɗin:

import pymongo
myclient = pymongo.MongoClient("mongodb://localhost:27017/")
mydb = myclient["mydatabase"]
mycol = mydb["customers"]
x = mycol.find_one()
print(x)

Sake Ayyuka

sauki daga cikin

Domin sauki daga cikin MongoDB, a ɗauki shi amfani da find() Method.

find() Method sauki daga cikin daga cikin daga cikin.

find() Na'ɗi na farko shi ɗanɗin query. A cikin wannan shirin, a ɗauki ɗanɗin query na ɗanɗin, wanda yana sauki daga cikin ɗanɗin.

find() Method bace da shirin wanda ke ba da nasara tare da SELECT * a cikin MySQL.

Shafi

sauki daga cikin ɗanɗin "customers" da ke cikin ɗanɗin, kuma yin ɗauki ɗauki ɗanɗin:

import pymongo
myclient = pymongo.MongoClient("mongodb://localhost:27017/")
mydb = myclient["mydatabase"]
mycol = mydb["customers"]
for x in mycol.find():
  print(x)

Sake Ayyuka

sauki daga cikin daga cikin

find() 方法 na'ɡi na ɗaya shi ɗanɗin ɗanɗin wanda ke cikin ɗanɗin daga cikin ɗanɗin.

Wannan muhimmiya yana da wari, kuma a cikin lokacin da a kai, duk abin yace ke ciki.}

Shafi

Kawai ya yi kari sunan da adadi, kuma ba a kai _ids :

import pymongo
myclient = pymongo.MongoClient("mongodb://localhost:27017/")
mydb = myclient["mydatabase"]
mycol = mydb["customers"]
for x in mycol.find({},{ "_id": 0, "name": 1, "address": 1 }):
  print(x)

Sake Ayyuka

Babai ake kira 0 da 1 a cikin wani abu da yake da cikin abu (kuma a cikin lokacin da _id a cikin abin da yake cikin) : dukkanin abin da ake kira 0 zai yi 1, kuma a kai da 1 :

Shafi

Wannan shafi yana yi kari "address":

import pymongo
myclient = pymongo.MongoClient("mongodb://localhost:27017/")
mydb = myclient["mydatabase"]
mycol = mydb["customers"]
for x in mycol.find({},{ "address": 0 }):
  print(x)

Sake Ayyuka

Shafi

Duk da ake kira 0 da 1 a cikin wani abu da yake da cikin abu, zai yi rashin lafiya (kuma a cikin lokacin da babu _id a cikin abin da yake cikin) :

import pymongo
myclient = pymongo.MongoClient("mongodb://localhost:27017/")
mydb = myclient["mydatabase"]
mycol = mydb["customers"]
for x in mycol.find({},{ "name": 1, "address": 0 }):
  print(x)