Class BigQueryDateShardedSpec (0.3.0)

Spec for a group of BigQuery tables with name pattern [prefix]YYYYMMDD. Context: https://cloud.google.com/bigquery/docs/partitioned-tables#partitioning_versus_sharding

Output only. The table name prefix of the shards. The name of any given shard is [table_prefix]YYYYMMDD, e.g. for shard MyTable20180101, the table_prefix is "MyTable"