}

			if db, ok := jt.Subquery.(interface{ getInstance() *DB }); ok {
				stmt := db.getInstance().Statement
				if len(j.Selects) == 0 {
					j.Selects = stmt.Selects
				}
				if len(j.Omits) == 0 {
					j.Omits = stmt.Omits
				}
			}

			expr := clause.NamedExpr{SQL: fmt.Sprintf("%s JOIN (?) AS ?", joinType), Vars: []interface{}{jt.Subquery, clause.Table{Name: j.Alias}}}

			if j.On != nil {

* `allowed_hosts` - A list of domain names that should be allowed as hostnames. Wildcard domains such as `*.example.com` are supported for matching subdomains. To allow any hostname either use `allowed_hosts=["*"]` or omit the middleware.
* `www_redirect` - If set to True, requests to non-www versions of the allowed hosts will be redirected to their www counterparts. Defaults to `True`.

* `tax: float = 10.5` has a default of `10.5`.
* `tags: List[str] = []` has a default of an empty list: `[]`.

but you might want to omit them from the result if they were not actually stored.

For example, if you have models with many optional attributes in a NoSQL database, but you don't want to send very long JSON responses full of default values.

As in this case the function is not async, the right return type would be `Iterable[Item]`:

{* ../../docs_src/server_sent_events/tutorial001_py310.py ln[28:31] hl[29] *}

### No Return Type { #no-return-type }

You can also omit the return type. FastAPI will use the [`jsonable_encoder`](./encoder.md) to convert the data and send it.

{* ../../docs_src/server_sent_events/tutorial001_py310.py ln[34:37] hl[35] *}

## `ServerSentEvent` { #serversentevent }

{* ../../docs_src/stream_json_lines/tutorial001_py310.py ln[27:30] hl[28] *}

### No Return Type { #no-return-type }

You can also omit the return type. FastAPI will then use the [`jsonable_encoder`](./encoder.md) to convert the data to something that can be serialized to JSON and then send it as JSON Lines.

But the example here uses `PATCH` because it was created for these use cases.

///

/// note

Notice that the input model is still validated.

So, if you want to receive partial updates that can omit all the attributes, you need to have a model with all the attributes marked as optional (with default values or `None`).

timeout = "20"

[tool.coverage.run]
parallel = true
data_file = "coverage/.coverage"
source = [
    "docs_src",
    "tests",
    "fastapi"
]
relative_files = true
context = '${CONTEXT}'
omit = [
    "tests/benchmarks/*",
    "docs_src/response_model/tutorial003_04_py39.py",
    "docs_src/response_model/tutorial003_04_py310.py",
    "docs_src/dependencies/tutorial013_an_py310.py",  # temporary code example?

   * fluent iterable.
   *
   * <p>That iterator supports {@code remove()} if {@code iterable.iterator()} does. After {@code
   * remove()} is called, subsequent cycles omit the removed element, which is no longer in this
   * fluent iterable. The iterator's {@code hasNext()} method returns {@code true} until this fluent
   * iterable is empty.
   *

   * fluent iterable.
   *
   * <p>That iterator supports {@code remove()} if {@code iterable.iterator()} does. After {@code
   * remove()} is called, subsequent cycles omit the removed element, which is no longer in this
   * fluent iterable. The iterator's {@code hasNext()} method returns {@code true} until this fluent
   * iterable is empty.
   *

      for (int i = 0, n = origStackTrace.length; i < n; i++) {
        if (WithExplicitOrdering.class.getName().equals(origStackTrace[i].getClassName())) {
          // For pre-populated disallowedPriorLocks edges, omit the stack trace.
          setStackTrace(EMPTY_STACK_TRACE);
          break;
        }
        if (!EXCLUDED_CLASS_NAMES.contains(origStackTrace[i].getClassName())) {