tdk fn patch

Register a code-only patch of a function version.

A patch shares the parent's topology (tables, dependencies, triggers, workers) — only bundle / snippet / runtime values / description can be overridden.

A patch is the only way to change the code a planned run executes: both 'tdk fnrun replay' and 'tdk plan recover' / 'tdk fnrun recover' re-run the function version the plan pinned, picking up its latest patch. Registering a new version with 'tdk fn update' does not affect runs that are already planned.

tdk fn patch \
  --proj quickstart \
  --name read_world \
  --coll sales_data \
  --fn-version fv-9d21ac \
  --path functions/read_world.py::read_world \
  --description Ingests raw sales data from Postgres \
  --dir-to-bundle ./qs-example \
  --profile production

Flag	Type	Required	Description
--proj, -P	string	Optional	Project to target; overrides the pinned project. Prompted for when a command needs one and neither is set.
--name, -n	string	Required	Name of the function to patch.
--coll, -c	string	Optional	Name of the collection to which the function belongs.
--fn-version	string	Required	Function-version id (fvid) this patch overrides. Use 'tdk fn get --show-history' to find available fvids.
--path	string	Required	Path to the function file. Must be of the form '/path/to/file.py::function_name'. Will be prompted for it if not provided.
--description	string	Optional	Description of the patch.
--dir-to-bundle	string	Optional	Path to the directory that should be stored in the bundle for execution in the backend. If not provided, the folder where the function file is will be used.
--profile	string	Optional	Profile whose connection and settings this command uses: '<NAME>-connection.json' and '<NAME>-options.json' under the Tabsdata directory. Default: the profile set with 'tdk set --profile', else 'connection.json' and 'options.json'.