BigQuery Python 客户端中的变量表名

Question

Having seen the correct format for the setting of variables for sql queries, I'm not finding a similar way to parameterise the table name. For example, I have a simple query as follows

query = """
    select price, category, title, sm_title from `product.data_set.table_name` where  
    product = @product"""
    
    
    job_config = bigquery.QueryJobConfig(
    query_parameters=[
        bigquery.ScalarQueryParameter("product", "INT64", product),
    ])
    
    
    product_data = client.query(query, job_config=job_config).to_dataframe()

I would like the table_name to be a variable that can be passed in. Is there can option that can be used like is set in the job_config?

Answer 1

Setting of python variable for SQL query can be done using python's f string formatting approach as suggested by @EdoAkse in the comments.

You may use below

table_name = "tablenamegoeshere"
query = f""" select price, category, title, sm_title from `product.data_set.{table_name}` where product = @product"""

Posting the answer as community wiki for the benefit of the community that might encounter this use case in the future.

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