title: BigQuery statistics on slot used
body: <p>We have multiple GCP projects (dev, acc, pro)that run BigQuery jobs, mainly triggered from Airflow. We notice a rise in our cloud expense for BigQuery slot usage. Is there a BigQuery metadata tables/views where we can see all the queries, data processed, together with their slot usage (if not across projects in our organization, then at least per project). We want to identify which jobs are expensive which we can lessen slot usage.</p>