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View Query Performance

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To help you better understand the performance of your query, you can view your query's explain plan.

On the Explain Plan modal, you can view the explain stages as a Visual Tree, where each query operation appears as a node on the tree. You can also view the explain details in raw JSON format by selecting the Raw Output view.

The explain plan includes a Query Performance Summary with information on the execution of your query such as:

  • Execution time

  • The number of returned documents

  • The number of examined documents

  • The number of examined index keys

Note

The Explain Plan is not available if you are connected to Data Lake.

1

In the query bar, click the Explain button to open the modal.

Query plan
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2

By default, the explain stages are are shown as a Visual Tree. Each query operation appears as a node on the tree.

For more detailed execution information about the query operation, click the corresponding node.

For example, the following explain plan provides detailed information on a query that filters for { title : "Jurassic Park" }:

Detailed Visual Tree view
click to enlarge
3

To view your full explain plan as raw JSON, select the Raw Output view.

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