python-bigquery-storage | Google BigQuery Storage API_ | Development Tools library
kandi X-RAY | python-bigquery-storage Summary
kandi X-RAY | python-bigquery-storage Summary
python-bigquery-storage
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Top functions reviewed by kandi - BETA
- Convert a message to a pandas DataFrame
- Deserialize a row from a row
- Parse the fastavro schema
- Parses the avro schema
- Read rows from a stream
- Reconnect the stream
- Tries to retry the given exception
- Convert the stream to a Pandas DataFrame
- Convert the stream to a table
- Return a dict of dtypes dtypes
- Run the test
- Install system dependencies
- Leave a call
- Partition a function into two lists
- Generate README rst
- Run tests
- Creates a stream
- Parses a message into dictionaries
- Returns the next row
- Convert message to pandas DataFrame
- Return a list of rows
- Run flake8
- Returns an iterator over the rows in the stream
- Called when RPC terminates
- Fixes files in_dir
- Convert the table to a pandas DataFrame
python-bigquery-storage Key Features
python-bigquery-storage Examples and Code Snippets
!sudo /opt/conda/bin/conda install -c conda-forge google-cloud-bigquery google-cloud-bigquery-storage pandas pyarrow --yes
%pip install google-cloud-bigquery
reader = bqstorageclient.read_rows(position)
reader = bqstorageclient.read_rows(position, timeout=100)
Community Discussions
Trending Discussions on python-bigquery-storage
QUESTION
I'm reading data from partitioned and clustered BigQuery table. The only way to get exactly the 'Bytes processed' value is to actually run the query.
Now if I'm reading the same data using python client library for Storage API
, (taking setup from https://github.com/googleapis/python-bigquery-storage/blob/master/samples/quickstart.py)
How can I get 'bytes processed' in this case?
ANSWER
Answered 2020-May-04 at 11:15Bytes processed is measured when the storage API reads the column files. In your Java example you do that by invoking the storage API. In BQ this is only invoked when you run the query.
If you just edit the query in the console, BQ will give you an estimate only.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install python-bigquery-storage
You can use python-bigquery-storage like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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