What is the purpose of the post-hook in dbt?

The purpose of the post-hook in dbt is to execute custom SQL after a model, seed, or snapshot is built. This functionality allows users to run specific SQL commands immediately following the completion of a model's construction, which can be useful for tasks such as updating metadata, adding comments, or performing additional data transformation operations that need to occur after the initial model build is completed.

Post-hooks enable a degree of flexibility and customization in the workflow, allowing you to address specific needs or requirements in your analytics pipeline that go beyond just creating the data model. By leveraging post-hooks, you can ensure that any necessary adjustments or additional steps are automatically executed as part of your dbt run process.