Can you define a pre-hook?

In dbt, a pre-hook is a SQL statement or set of statements that are executed immediately before a model is compiled and run. It allows you to perform actions such as setting session variables, creating temporary tables, or inserting data into staging tables that the model depends on. Pre-hooks are defined in the model’s .yml file under the pre-hook key or globally in the dbt_project.yml file. For example:

models:
  my_project:
    my_model:
      pre-hook:
        - "SET search_path TO analytics"
        - "INSERT INTO temp_table SELECT * FROM source_table"

When dbt runs dbt run, it will execute the pre-hook statements before executing the SQL for my_model. This is useful for preparing the environment or data needed by the model, ensuring that the model runs with the correct context and dependencies.