nyc-taxi-data | Import public NYC taxi and for-hire vehicle | Database library
kandi X-RAY | nyc-taxi-data Summary
kandi X-RAY | nyc-taxi-data Summary
Code originally in support of this post: Analyzing 1.1 Billion NYC Taxi and Uber Trips, with a Vengeance. This repo provides scripts to download, process, and analyze data for billions of taxi and for-hire vehicle (Uber, Lyft, etc.) trips originating in New York City since 2009. Most of the raw data comes from the NYC Taxi & Limousine Commission. The data is stored in a PostgreSQL database, and uses PostGIS for spatial calculations.
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Trending Discussions on nyc-taxi-data
QUESTION
I am following this section of a tutorial on Apache Spark
from Azure team. But when I try to use BroupBy
function of DataFrame
, I get the following error:
Error:
NameError: name 'TripDistanceMiles' is not defined
Question: What may be a cause of the error in the following code, and how can it be fixed?
NOTE: I know how to group by the following results using Spark SQL as it is shown in a later section of the same tutorial. But I am interested in using the Groupby
clause on the DataFrame
Details:
a) Following code correctly displays 100 rows with column headers PassengerCount
and TripDistanceMiles
:
ANSWER
Answered 2021-Nov-22 at 02:21Try putting the TripDistanceMiles into double quotes. Like
QUESTION
I am working on Tutorial 4 of this doc from Azure Team where this section in a Dedicated SQL pool
(that actually is also a database - as item 2 of Tutorial states) creates a database named nyctaxi
with a table nyctaxi.trip
as follows:
ANSWER
Answered 2021-Nov-13 at 22:11When you create a Spark database the tables aren't automatically added to your Dedicated SQL Pool. You can add them as External Tables if you want, but there's no automatic metadata sync between Spark and Dedicated SQL Pool.
Synapse does create a serverless "Lake Database" corresponding to your Spark database, which you can use from SQL Scripts or access with SQL Server reporting tools.
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