HTTPrequest to GCP BigQuery via Cloud Function with Multiple Tables - google-cloud-platform

Question

I'm looking to create a HTTPrequest to BigQuery via a Cloud Function within GCP where the request passes a value, that value is passed to the query and another value is returned from a joined table. The SQL works in BQ but having issues getting a value returned when I apply it to the Cloud Function.
Here's the curl I'm using as well.
https://us-central1-something.cloudfunctions.net/something/something2?client_Id=823754783.2
Thanks in advance.
from flask import escape
from google.cloud import bigquery
def cors_enabled_function(request):
if request.method == 'OPTIONS':
headers = {
'Access-Control-Allow-Origin': '*',
'Access-Control-Allow-Methods': 'GET',
'Access-Control-Allow-Headers': 'Content-Type',
'Access-Control-Max-Age': '3600'
}
return ('', 204, headers)
client = bigquery.Client()
def something2(request):
request_json = request.get_json(silent=True)
request_args = request_args
table = ['`audience-cookie.ecommerce.traffic` as traffic JOIN `audience-cookie.ecommerce.cardholder` as cardholder ON traffic.customerId = cardholder.customerId']
QUERY = ('SELECT '+cardholder+' from `'+table+'` WHERE client_Id='+client_Id)
try:
query_job = client.query(QUERY)
rows = query_job.result()
row_list = []
for row in rows:
row_list.append(str(row[cardholder]))
return("<p>"+"</p><p>".join(row(row_list) + "</p>"))
except e:
return(e)

Answer 1

I recommend you to print your query. There is several mistakes
Why are you using [] in the table var definition?
you use backquote ` in table and when your insert table into the query. So, at the end, you have a double backquote
client_Id isn't defined in your code