Module reader (2.3.0)

Version 2.3.0

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API documentation for bigquery_storage_v1.reader module.

Classes

ReadRowsIterable

ReadRowsIterable(reader, read_session)

An iterable of rows from a read session.

Parameters

Name	Description
reader	google.cloud.bigquery_storage_v1.reader.ReadRowsStream A read rows stream.
read_session	google.cloud.bigquery_storage_v1.types.ReadSession A read session. This is required because it contains the schema used in the stream messages.

ReadRowsPage

ReadRowsPage(stream_parser, message)

An iterator of rows from a read session message.

Parameters

Name	Description
stream_parser	google.cloud.bigquery_storage_v1.reader._StreamParser A helper for parsing messages into rows.
message	google.cloud.bigquery_storage_v1.types.ReadRowsResponse A message of data from a read rows stream.

ReadRowsStream

ReadRowsStream(wrapped, client, name, offset, read_rows_kwargs)

A stream of results from a read rows request.

This stream is an iterable of ReadRowsResponse. Iterate over it to fetch all row messages.

If the fastavro library is installed, use the rows() method to parse all messages into a stream of row dictionaries.

If the pandas and fastavro libraries are installed, use the to_dataframe() method to parse all messages into a pandas.DataFrame.