{* ../../docs_src/dependencies/tutorial001_02_an_py310.py hl[12,16,21] *}

/// tip | Consejo

Esto es solo Python estándar, se llama un "alias de tipo", en realidad no es específico de **FastAPI**.

Pero porque **FastAPI** está basado en los estándares de Python, incluido `Annotated`, puedes usar este truco en tu código. 😎

///

{* ../../docs_src/dependencies/tutorial001_02_an_py310.py hl[12,16,21] *}

/// tip | Dica

Isso é apenas Python padrão, essa funcionalidade é chamada de "type alias", e na verdade não é específica ao **FastAPI**.

Mas como o **FastAPI** se baseia em convenções do Python, incluindo `Annotated`, você pode incluir esse truque no seu código. 😎

///

	if !field.PrimaryKey {
		// check type
		if !strings.HasPrefix(fullDataType, realDataType) {
			// check type aliases
			aliases := m.DB.Migrator().GetTypeAliases(realDataType)
			for _, alias := range aliases {
				if strings.HasPrefix(fullDataType, alias) {
					isSameType = true
					break
				}
			}

			if !isSameType {
				alterColumn = true
			}
		}
	}

	if !isSameType {
		// check size

    protected void createAlias(final String index, final String createdIndexName) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        // alias
        final String aliasConfigDirPath = getResourcePath(indexConfigPath, fessConfig.getFesenType(), "/" + index + "/alias");
        try {
            final File aliasConfigDir = ResourceUtil.getResourceAsFile(aliasConfigDirPath);
            if (aliasConfigDir.isDirectory()) {

```

하지만 `Annotated`를 사용하고 있기에, `Annotated` 값을 변수에 저장하고 여러 장소에서 사용할 수 있습니다:

{* ../../docs_src/dependencies/tutorial001_02_an_py310.py hl[12,16,21] *}

/// tip | 팁

이는 그저 표준 파이썬이고 "type alias"라고 부르며 사실 **FastAPI**에 국한되는 것은 아닙니다.

하지만, `Annotated`를 포함하여, **FastAPI**가 파이썬 표준을 기반으로 하고 있기에, 이를 여러분의 코드 트릭으로 사용할 수 있습니다. 😎

///

## Резюме

Вы можете объявлять дополнительные правила валидации и метаданные для ваших параметров запроса.

Общие метаданные:

* `alias`
* `title`
* `description`
* `deprecated`
* `include_in_schema`

Специфичные правила валидации для строк:

* `min_length`
* `max_length`
* `regex`

ACCESS_KEY=$(kubectl get secret {{ template "minio.secretName" . }} -o jsonpath="{.data.rootUser}" | base64 --decode) 3. export SECRET_KEY=$(kubectl get secret {{ template "minio.secretName" . }} -o jsonpath="{.data.rootPassword}" | base64 --decode) 4. mc alias set {{ template "minio.fullname" . }}-local http://localhost:{{ .Values.service.port }} "$ACCESS_KEY" "$SECRET_KEY" --api s3v4 5. mc ls {{ template "minio.fullname" . }}-local Alternately, you can use your browser or the Minio SDK to access the server...

Type declarations come in two forms: alias declarations and type definitions.
</p>

<pre class="ebnf">
TypeDecl = "type" ( TypeSpec | "(" { TypeSpec ";" } ")" ) .
TypeSpec = AliasDecl | TypeDef .
</pre>

<h4 id="Alias_declarations">Alias declarations</h4>

<p>
An alias declaration binds an identifier to the given type
[<a href="#Go_1.9">Go 1.9</a>].
</p>

ACCESS_KEY=$(kubectl get secret {{ template "minio.secretName" . }} -o jsonpath="{.data.rootUser}" | base64 --decode) 3. export SECRET_KEY=$(kubectl get secret {{ template "minio.secretName" . }} -o jsonpath="{.data.rootPassword}" | base64 --decode) 4. mc alias set {{ template "minio.fullname" . }}-local http://localhost:{{ .Values.service.port }} "$ACCESS_KEY" "$SECRET_KEY" --api s3v4 5. mc ls {{ template "minio.fullname" . }}-local Alternately, you can use your browser or the Minio SDK to access the server...

		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrInvalidTableAlias: {
		Code:           "InvalidTableAlias",
		Description:    "The SQL expression contains an invalid table alias.",
		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrMissingRequiredParameter: {
		Code:           "MissingRequiredParameter",