How Many Maximum Slots Are Available for a Query Execution in BigQuery?

There are a few factors that come into play when determining the maximum slots available for a query execution in BigQuery. The size of the data being queried, the type of query being run, and the level of concurrency desired all play a role in how many slots will be available.

For example, if you are querying a large dataset and want to run a complex query that requires multiple passes over the data, you will need more slots than if you are querying a smaller dataset and running a simpler query. If you are looking to run multiple queries concurrently, you will also need more slots than if you are only running one query at a time.

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The good news is that BigQuery is highly scalable and can handle large workloads. If you need more slots than are available, you can simply increase the number of workers in your cluster.

This will give you more slots and help to improve performance.