TheMichaelHu commented on code in PR #22452:
URL: https://github.com/apache/beam/pull/22452#discussion_r937826519
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sdks/python/apache_beam/io/gcp/bigquery_tools.py:
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@@ -101,6 +101,10 @@
# Timeout for a BQ streaming insert RPC. Set to a maximum of 2 minutes.
BQ_STREAMING_INSERT_TIMEOUT_SEC = 120
+_PROJECT_PATTERN = r'([a-z0-9.-]+:)?[a-z][a-z0-9-]{4,28}[a-z0-9]'
+_DATASET_PATTERN = r'\w{1,1024}'
+_TABLE_PATTERN = r'[\p{L}\p{M}\p{N}\p{Pc}\p{Pd}\p{Zs}$]{1,1024}'
Review Comment:
> Contain Unicode characters in category L (letter), M (mark), N (number),
Pc (connector, including underscore), Pd (dash), Zs (space).
from https://cloud.google.com/bigquery/docs/tables#table_naming
The `$` is to also add support for table partitions.
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