python - BigQuery API 返回 "No query found"

Question

我尝试使用 Python 查询 BigQuery 数据库，但每次运行此代码时，我都会收到一条错误消息，提示“未找到查询”，即使该查询在 Google Cloud Console 上运行良好。

注意:myfilepath.json 和 my-project-id 是我代码中的有效值。

def explicit():
    import os
    os.environ["GOOGLE_APPLICATION_CREDENTIALS"] = "myfilepath.json"
    credentials = GoogleCredentials.get_application_default()
    bigquery_service = build('bigquery', 'v2', credentials=credentials)
    query_request = bigquery_service.jobs()

    query_data = {
        'query': ('#standardSQL SELECT * FROM `SentimentAnalysis.testdataset`')
    }

    query_response = query_request.query(
        projectId='my-project-id',
        body=query_data).execute()
    print(query_response)

explicit()

我每次遇到的错误是:

googleapiclient.errors.HttpError: <HttpError 400 when requesting https://www.googleapis.com/bigquery/v2/projects/my-project-id/queries?alt=json returned "1.58 - 1.58: No query found.">

Answer 1

基于 Mikhail 建议的工作片段，使用 'useLegacySql': False:

from apiclient.discovery import build

def explicit():
    bigquery_service = build('bigquery', 'v2')

    query_request = bigquery_service.jobs()

    query_data = {
        'query': ('SELECT * FROM `dataset.table`'),
        'useLegacySql': False
    }

    query_response = query_request.query(
        projectId='PROJECT_ID',
        body=query_data).execute()
    print(query_response)

explicit()

或者，您可以使用惯用的客户端:

from google.cloud import bigquery

client = bigquery.Client()

QUERY = ("""
    SELECT * FROM `project.dataset.table`
    LIMIT 10""")

query_job = client.query(QUERY)

results = query_job.result()
rows = list(results)

for row in rows:
    print row