Passing Dynamic Date Variable in Big Query| Python

July 28, 2022

I’m trying to run this bigQuery [in python]:

  start_date= "2022-03-08"
  end_date = "2022-05-03"
  query = f"""
    SELECT SUM(CostInBillingCurrency) as cost,EXTRACT(MONTH from date) as MONTH, SubscriptionId, SubscriptionName
    FROM `table_name`
    WHERE
    Date BETWEEN TIMESTAMP({start_date})
    AND TIMESTAMP({end_date})
    GROUP BY
    SubscriptionId, SubscriptionName,MONTH """

this is the error I’m getting:

google.api_core.exceptions.BadRequest: 400 No matching signature for function TIMESTAMP for argument types: INT64. Supported signatures: TIMESTAMP(STRING, [STRING]); TIMESTAMP(DATE, [STRING]); TIMESTAMP(DATETIME, [STRING]); TIMESTAMP(TIMESTAMP) at [5:18]

If I hardcode the date as:

  Date BETWEEN TIMESTAMP("2022-06-01")
  AND TIMESTAMP("2022-06-30")

it works fine. so the query is right.

please help in figuring out how to pass date dynamically.

>Solution :

Seems like the the variable is just putting values in the query, but query is expecting the string, you update your query as follows

query = f"""
SELECT SUM(CostInBillingCurrency) as cost,EXTRACT(MONTH from date) as MONTH, SubscriptionId, SubscriptionName
FROM `table_name`
WHERE
Date BETWEEN TIMESTAMP("{start_date}")
AND TIMESTAMP("{end_date}")
GROUP BY
SubscriptionId, SubscriptionName,MONTH """