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下面的代碼:BIGQUERY:任務完成了,但job.query_results()返回total_bytes_processed無
import time
from google.cloud import bigquery
client = bigquery.Client()
query = """\
select 3 as x
"""
dataset = client.dataset('dataset_name')
table = dataset.table(name='table_name')
job = client.run_async_query('job_name_76', query)
job.write_disposition = 'WRITE_TRUNCATE'
job.destination = table
job.begin()
retry_count = 100
while retry_count > 0 and job.state != 'DONE':
retry_count -= 1
time.sleep(10)
job.reload()
print job.state
print job.query_results().name
print job.query_results().total_bytes_processed
打印:
DONE
job_name_76
None
我不明白爲什麼total_bytes_processed
回報None
因爲工作完成和文檔說:
total_bytes_processed:
查詢處理的字節總數。
參見 https://cloud.google.com/bigquery/docs/reference/rest/v2/jobs/query#totalBytesProcessed
返回類型:int或NoneType
返回:服務器(無直到由服務器設置)上計數生成。
謝謝你的回答。我也發現'job._properties ['statistics'] ['totalBytesProcessed']'給了我結果。 – gus87