python - Google Bigquery - WHERE 子句中的值列表

Question

我正在尝试从 Google 大查询公共(public)表中查询几何数据，并尝试找出如何在 WHERE 子句中传递值列表/过滤查询。请注意，我正在用 python 编写查询。

这是我的查询:

from google.cloud import bigquery

# Obtain geometries from Google Big Query 

metros = ['Los Angeles-Long Beach-Anaheim, CA','Phoenix-Mesa-Chandler, AZ']

sql = """
  SELECT *
  FROM `bigquery-public-data.geo_us_boundaries.cbsa`
  WHERE name IN UNNEST(metros)
"""

df = client.query(sql).to_dataframe()

我明白了:

BadRequest: 400 Unrecognized name: metros at [4:24]

Answer 1

您需要像这样传递数组:

from google.cloud import bigquery

# Obtain geometries from Google Big Query 

metros = ['Los Angeles-Long Beach-Anaheim, CA','Phoenix-Mesa-Chandler, AZ']

sql = """
  SELECT *
  FROM `bigquery-public-data.geo_us_boundaries.cbsa`
  WHERE name IN UNNEST(%s)""" %(metros)


df = client.query(sql).to_dataframe()