TheNeuralBit commented on code in PR #17159:
URL: https://github.com/apache/beam/pull/17159#discussion_r929178759
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sdks/python/apache_beam/io/gcp/bigquery.py:
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@@ -2422,6 +2422,9 @@ class ReadFromBigQuery(PTransform):
to run queries with INTERACTIVE priority. This option is ignored when
reading from a table rather than a query. To learn more about query
priority, see: https://cloud.google.com/bigquery/docs/running-queries
+ output_type (str): By default, the schema returned from this transform
+ would be of type PYTHON_DICT. Other schema types can be specified
+ ("BEAM_ROW").
Review Comment:
It actually should be doable, we're tracking schema inference for TypedDict
in https://github.com/apache/beam/issues/22086. Once that's done, we could
produce a TypedDict typehint for PYTHON_DICT, and both modes would support
schema inference.
Unfortunately I think #22086 a ways out still, so it makes sense to have
this as a stopgap.
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