Versions for dbt project objects and files¶

Snowflake maintains immutable versions of dbt project objects and their source files. This versioning lets you track and manage changes throughout the development lifecycle.

Note

dbt project object versions are distinct from the dbt Core version used for execution. For more information, see Supported dbt Core versions for dbt Projects on Snowflake.

Snowflake identifies dbt project object versions in the dbt project stage, as shown in the following example.

snow://dbt/my_db.my_schema.my_dbt_project_object/versions/version_id

version_id can be any of the following identifiers:

Identifier	Description
`VERSION$num`	Specifies a version identifier in the form `VERSION$num`, where `num` is a positive integer. For example, `VERSION$1`. The version number begins at `1` when you create a dbt project object and increments by one with each new version of the dbt project object. Snowflake increments the version identifier when you perform the following tasks: Redeploy dbt project from a workspace (runs the ALTER command with the ADD VERSION option). Update the project by using the ALTER DBT PROJECT command. Run the Snow CLI `snow dbt deploy` command with the `--force` option. Snowflake resets the version identifier to `1` and removes all version aliases when you run the CREATE DBT PROJECT command with the `OR REPLACE` option.
`LAST`	Indicates the most recent version of the dbt project object.
`FIRST`	Indicates the oldest version of the dbt project object.
`version_name_alias`	Indicates a custom version name alias that you have created for a specific version of the dbt project object using the ALTER DBT PROJECT command with the ADD VERSION option. A version name alias always maps to a specific version identifier, such as `VERSION$3`.

Project files stored in the dbt project stage are organized by version, with each version having its own subdirectory. For example, a dbt project object named my_dbt_project_object with a version identifier of VERSION$3 and a dbt project file named dbt_project.yml can be referenced as snow://dbt/my_db.my_schema.my_dbt_project_object/versions/VERSION$3/dbt_project.yml.