What is the function of the dbt sources command?

The function of the dbt sources command is primarily focused on running tests on source data. This command allows users to define, document, and validate their source data in the dbt project. By utilizing dbt's capabilities, users can ensure that the data they are working with meets certain quality standards before applying transformations within their models.

When the sources command is used, it helps in checking the integrity and correctness of data from external sources by running tests such as uniqueness checks or not-null constraints. This is crucial for maintaining data quality throughout the analytics workflow, as it ensures that users are starting their analytical processes with reliable data.

In contrast, initiating a new dbt project, creating a new data model, or compiling SQL code represent different functionalities that are not related to the specific purpose of the sources command.