Monitor Query Costs in BigQuery via INFORMATION_SCHEMA views

monitor-query-costs-in-bigquery-example.sql

# Monitor Query costs in BigQuery; standard-sql; 2020-06-21
# @see http://www.pascallandau.com/bigquery-snippets/monitor-query-costs/

DECLARE timezone STRING DEFAULT "Europe/Berlin";
DECLARE gb_divisor INT64 DEFAULT 1024*1024*1024;
DECLARE tb_divisor INT64 DEFAULT gb_divisor*1024;
DECLARE cost_per_tb_in_dollar INT64 DEFAULT 5;
DECLARE cost_factor FLOAT64 DEFAULT cost_per_tb_in_dollar / tb_divisor;

SELECT
 DATE(creation_time, timezone) creation_date,
 FORMAT_TIMESTAMP("%F %H:%I:%S", creation_time, timezone) as query_time,
 job_id,
 ROUND(total_bytes_processed / gb_divisor,2) as bytes_processed_in_gb,
 IF(cache_hit != true, ROUND(total_bytes_processed * cost_factor,4), 0) as cost_in_dollar,
 project_id,
 user_email,
FROM 
  `region-us`.INFORMATION_SCHEMA.JOBS_BY_USER
WHERE
  DATE(creation_time) BETWEEN DATE_SUB(CURRENT_DATE(), INTERVAL 30 DAY) and CURRENT_DATE()
ORDER BY
  bytes_processed_in_gb DESC

Source: BigQuery: Monitor Query Costs via INFORMATION_SCHEMA