MongoDB listings with availability greater than 300
Retrieve all documents with name, address, host, availability in the listingsAndReviews collection where the availability_365 field is greater than 300.
Structure of 'listingsAndReviews' collection:
{ _id: '10059872', listing_url: 'https://www.airbnb.com/rooms/10059872', name: 'Soho Cozy, Spacious and Convenient', summary: 'Clean, fully furnish, Spacious 1 bedroom flat just off the escalator in Mid Levels. 2 minutes From Soho Bar and Restaurants. Located in a quiet alley 1 minute from Sun Yat Sen', space: '', description: 'Clean, fully furnish, Spacious 1 bedroom flat just off the escalator in Mid Levels. 2 minutes From Soho Bar and Restaurants. Located in a quiet alley 1 minute from Sun Yat Sen', neighborhood_overview: '', notes: '', transit: '', access: '', interaction: '', house_rules: '', property_type: 'Apartment', room_type: 'Entire home/apt', bed_type: 'Real Bed', minimum_nights: '4', maximum_nights: '20', cancellation_policy: 'flexible', last_scraped: ISODate("2019-03-11T04:00:00.000Z"), calendar_last_scraped: ISODate("2019-03-11T04:00:00.000Z"), first_review: ISODate("2015-12-19T05:00:00.000Z"), last_review: ISODate("2018-03-27T04:00:00.000Z"), accommodates: 3, bedrooms: 1, beds: 2, number_of_reviews: 3, bathrooms: Decimal128("1.0"), amenities: [ 'Air conditioning', 'Kitchen', 'Smoking allowed', 'Doorman', 'Elevator', 'Heating', 'Family/kid friendly', 'Essentials', '24-hour check-in', 'translation missing: en.hosting_amenity_50' ], price: Decimal128("699.00"), weekly_price: Decimal128("5000.00"), extra_people: Decimal128("0.00"), guests_included: Decimal128("1"), images: { thumbnail_url: '', medium_url: '', picture_url: 'https://a0.muscache.com/im/pictures/4533a1dc-6fd8-4167-938d-391c6eebbc19.jpg?aki_policy=large', xl_picture_url: '' }, host: { host_id: '51624384', host_url: 'https://www.airbnb.com/users/show/51624384', host_name: 'Giovanni', host_location: 'Hong Kong, Hong Kong', host_about: '', host_thumbnail_url: 'https://a0.muscache.com/im/pictures/264b82a7-756f-4da8-b607-dc9759e2a10f.jpg?aki_policy=profile_small', host_picture_url: 'https://a0.muscache.com/im/pictures/264b82a7-756f-4da8-b607-dc9759e2a10f.jpg?aki_policy=profile_x_medium', host_neighbourhood: 'Soho', host_is_superhost: false, host_has_profile_pic: true, host_identity_verified: false, host_listings_count: 1, host_total_listings_count: 1, host_verifications: [ 'email', 'phone', 'reviews', 'jumio', 'government_id' ] }, address: { street: 'Hong Kong, Hong Kong Island, Hong Kong', suburb: 'Central & Western District', government_area: 'Central & Western', market: 'Hong Kong', country: 'Hong Kong', country_code: 'HK', location: { type: 'Point', coordinates: [ 114.15027, 22.28158 ], is_location_exact: true } }, availability: { availability_30: 0, availability_60: 0, availability_90: 0, availability_365: 0 }, review_scores: { review_scores_accuracy: 10, review_scores_cleanliness: 10, review_scores_checkin: 10, review_scores_communication: 10, review_scores_location: 10, review_scores_value: 8, review_scores_rating: 100 }, reviews: [ { _id: '56904633', date: ISODate("2015-12-19T05:00:00.000Z"), listing_id: '10059872', reviewer_id: '5302612', reviewer_name: 'Octavio', comments: 'The host canceled this reservation 11 days before arrival. This is an automated posting.' }, { _id: '223175530', date: ISODate("2018-01-01T05:00:00.000Z"), listing_id: '10059872', reviewer_id: '48436743', reviewer_name: 'Ross', comments: 'Giovanni was very helpful and responsive to my questions. This is a great apartment that is very convenient for exploring Hong Kong.' }, { _id: '247251577', date: ISODate("2018-03-27T04:00:00.000Z"), listing_id: '10059872', reviewer_id: '111288273', reviewer_name: 'Christian', comments: 'The host canceled this reservation 8 days before arrival. This is an automated posting.' } ] }, .......
Query:
db.listingsAndReviews.find(
{ "availability.availability_365": { $gt: 300 } },
{ name: 1, address: 1, host: 1, availability: 1 }
)
Output:
{ _id: '10354347', name: 'Room For Erasmus', host: { host_id: '53288729', host_url: 'https://www.airbnb.com/users/show/53288729', host_name: 'Kemal', host_location: 'TR', host_about: '', host_response_time: 'within a day', host_thumbnail_url: 'https://a0.muscache.com/im/pictures/c658d62a-2598-4ff7-80a0-633ba0bdd619.jpg?aki_policy=profile_small', host_picture_url: 'https://a0.muscache.com/im/pictures/c658d62a-2598-4ff7-80a0-633ba0bdd619.jpg?aki_policy=profile_x_medium', host_neighbourhood: '', host_response_rate: 100, host_is_superhost: false, host_has_profile_pic: true, host_identity_verified: false, host_listings_count: 1, host_total_listings_count: 1, host_verifications: [ 'email', 'phone', 'reviews' ] }, address: { street: 'Şişli, İstanbul, Turkey', suburb: 'Kadıköy', government_area: 'Kadikoy', market: 'Istanbul', country: 'Turkey', country_code: 'TR', location: { type: 'Point', coordinates: [ 29.06064, 40.98837 ], is_location_exact: false } }, availability: { availability_30: 30, availability_60: 60, availability_90: 90, availability_365: 365 } } .....
Explanation:
The said query in MongoDB that retrieves documents with the name, address, host, and availability fields from the 'listingsAndReviews' collection where the availability_365 field is greater than 300.
The $gt operator in the find() method filters the documents where the value of the availability_365 field within the availability subdocument is greater than 300.
The second parameter is the projection that includes name, address, host, and availability fields in the output by setting fields to 1.
Improve this sample solution and post your code through Disqus.
Previous: MongoDB listings with host location in Brazil.
Next: MongoDB listings with 1 bedroom.
What is the difficulty level of this exercise?
It will be nice if you may share this link in any developer community or anywhere else, from where other developers may find this content. Thanks.
https://w3resource.com/mongodb-exercises/mongodb-listingsandreviews-exercise-27.php
- Weekly Trends and Language Statistics
- Weekly Trends and Language Statistics