Trim a decimal to 2 places Bigquery

Question

I am currently running a query that runs a sum function and also divides this number. Currently I get values like 0.0904246741698848, and 1.6419814808335567. I want these decimals to be trimmed to 2 spaces past the decimal point. Their schema is a float. Here is my code. Thanks for the help.

#standardSQL
SELECT
  Serial,
  MAX(createdAt) AS Latest_Use,
  SUM(ConnectionTime/3600) as Total_Hours,
  COUNT(DISTINCT DeviceID) AS Devices_Connected
FROM `dataworks-356fa.FirebaseArchive.Firebase_ConnectionInfo`
WHERE PeripheralType = 1 or PeripheralType = 2 or PeripheralType = 12
GROUP BY Serial
ORDER BY Latest_Use DESC

Answer 1

#standardSQL
WITH `data` AS (
  SELECT 0.0904246741698848  AS val UNION ALL
  SELECT 1.6419814808335567 
)
SELECT val, ROUND(val, 2) AS rounded_val
FROM `data`   

for example, assuming your want apply this to your Total_Hours column :

#standardSQL
SELECT
  Serial,
  MAX(createdAt) AS Latest_Use,
  ROUND(SUM(ConnectionTime/3600),2) AS Total_Hours,
  COUNT(DISTINCT DeviceID) AS Devices_Connected
FROM `dataworks-356fa.FirebaseArchive.Firebase_ConnectionInfo`
WHERE PeripheralType = 1 OR PeripheralType = 2 OR PeripheralType = 12
GROUP BY Serial
ORDER BY Latest_Use DESC