*
   * <p><b>Note:</b> The current implementation eagerly allocates storage for {@code size} elements.
   * As a consequence, passing values like {@code Integer.MAX_VALUE} can lead to {@link
   * OutOfMemoryError}.
   *
   * @param iterator the iterator to return a partitioned view of
   * @param size the desired size of each partition (the last may be smaller)

但是在 ORM 模式下，由于 Pydantic 本身会尝试从属性访问它需要的数据（而不是假设为 `dict`），你可以声明你想要返回的特定数据，它甚至可以从 ORM 中获取它。

## CRUD工具

现在让我们看看文件`sql_app/crud.py`。

在这个文件中，我们将编写可重用的函数用来与数据库中的数据进行交互。

**CRUD**分别为：增加（**C**reate）、查询（**R**ead）、更改（**U**pdate）、删除（**D**elete），即增删改查。

...虽然在这个例子中我们只是新增和查询。

### 读取数据

从 `sqlalchemy.orm`中导入`Session`，这将允许您声明`db`参数的类型，并在您的函数中进行更好的类型检查和完成。

导入之前的`models`（SQLAlchemy 模型）和`schemas`（Pydantic*模型*/模式）。

	public static synthetic fun delete$default (Lokhttp3/Request$Builder;Lokhttp3/RequestBody;ILjava/lang/Object;)Lokhttp3/Request$Builder;
	public fun get ()Lokhttp3/Request$Builder;
	public fun head ()Lokhttp3/Request$Builder;
	public fun header (Ljava/lang/String;Ljava/lang/String;)Lokhttp3/Request$Builder;
	public fun headers (Lokhttp3/Headers;)Lokhttp3/Request$Builder;

          "type":       "stop",

          "type":       "stop",

      <match value="&lt;!doctype HTML" type="string" offset="0:64"/>
      <match value="&lt;!doctype html" type="string" offset="0:64"/>
      <match value="&lt;HEAD" type="string" offset="0:64"/>
      <match value="&lt;head" type="string" offset="0:64"/>
      <match value="&lt;TITLE" type="string" offset="0:64"/>
      <match value="&lt;title" type="string" offset="0:64"/>

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ng","ObjectFunctionString","support","isFunction","obj","nodeType","item","isWindow","preservedScriptAttributes","type","src","nonce","noModule","DOMEval","code","node","doc","i","val","script","createElement","text","getAttribute","setAttribute","head","appendChild","parentNode","removeChild","toType","version","rhtmlSuffix","jQuery","selector","context","fn","init","isArrayLike","length","nodeName","elem","name","toLowerCase","prototype","jquery","constructor","toArray","get","num","pushStack"...

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