## Das Tutorial zuerst lesen { #read-the-tutorial-first }

Die nächsten Abschnitte setzen voraus, dass Sie das Haupt-[Tutorial – Benutzerhandbuch: Sicherheit](../../tutorial/security/index.md) bereits gelesen haben.

          return true;
        }
      }
    }
    return false;
  }

  /**
   * Closed addressing tends to perform well even with high load factors. Being conservative here
   * ensures that the table is still likely to be relatively sparse (hence it misses fast) while
   * saving space.
   */
  @VisibleForTesting static final double MAX_LOAD_FACTOR = 1.0;

  /**

  }

  /** A factory that chooses the most space-efficient representation of the table. */
  static <R, C, V> RegularImmutableTable<R, C, V> forOrderedComponents(
      ImmutableList<Cell<R, C, V>> cellList,
      ImmutableSet<R> rowSpace,
      ImmutableSet<C> columnSpace) {
    // use a dense table if more than half of the cells have values
    // TODO(gak): tune this condition based on empirical evidence

匯入 `SQLModel` 並建立一個資料庫模型：

{* ../../docs_src/sql_databases/tutorial001_an_py310.py ln[1:11] hl[7:11] *}

`Hero` 類別與 Pydantic 模型非常相似（事實上，在底層它就是一個 Pydantic 模型）。

有幾點差異：

* `table=True` 告訴 SQLModel 這是一個「資料表模型」（table model），它應該代表 SQL 資料庫中的一個資料表，而不僅僅是「資料模型」（就像一般的 Pydantic 類別）。

* `Field(primary_key=True)` 告訴 SQLModel，`id` 是 SQL 資料庫中的「主鍵」。 （你可以在 SQLModel 文件中進一步了解 SQL 主鍵）

# Handbuch für fortgeschrittene Benutzer { #advanced-user-guide }

## Zusatzfunktionen { #additional-features }

Das Haupt-[Tutorial – Benutzerhandbuch](../tutorial/index.md) sollte ausreichen, um Ihnen einen Überblick über alle Hauptfunktionen von **FastAPI** zu geben.

In den nächsten Abschnitten sehen Sie weitere Optionen, Konfigurationen und zusätzliche Funktionen.

/// tip | Tipp

Die nächsten Abschnitte sind **nicht unbedingt „fortgeschritten“**.

@GwtIncompatible // TODO(hhchan): ArrayTable
@NullUnmarked
public class ArrayTableColumnMapTest extends ColumnMapTests {
  public ArrayTableColumnMapTest() {
    super(true, false, false, false);
  }

  @Override
  Table<Integer, String, Character> makeTable() {
    return ArrayTable.create(asList(1, 2, 3), asList("foo", "bar", "dog"));
  }

  @Override
  protected Map<String, Map<Integer, Character>> makeEmptyMap() {

@GwtIncompatible // TODO(hhchan): ArrayTable
@NullUnmarked
public class ArrayTableRowMapTest extends RowMapTests {
  public ArrayTableRowMapTest() {
    super(true, false, false, false);
  }

  @Override
  Table<String, Integer, Character> makeTable() {
    return ArrayTable.create(asList("foo", "bar", "dog"), asList(1, 2, 3));
  }

  @Override
  protected Map<String, Map<Integer, Character>> makeEmptyMap() {

import java.io.IOException
import okio.Buffer
import okio.BufferedSink
import okio.BufferedSource
import okio.ByteString
import okio.ByteString.Companion.encodeUtf8
import okio.Options

/**
 * A decoded [mapping table] that can perform the [mapping step] of IDNA processing.
 *
 * This implementation is optimized for readability over efficiency.
 *
 * This implements non-transitional processing by preserving deviation characters.
 *

@GwtCompatible
@NullMarked
public class HashBasedTableRowTest extends RowTests {
  public HashBasedTableRowTest() {
    super(false, true, true, true, true);
  }

  @Override
  Table<Character, String, Integer> makeTable() {
    return HashBasedTable.create();
  }

      var $submitButton = $("input#submit, button#submit");
      if ($submitButton.length > 0) {
        $submitButton.closest("form").trigger("submit");
      }
      return false;
    }
  });

  $(".table tr[data-href]").each(function() {
    var $row = $(this);
    $row.css("cursor", "pointer")
      .on("mouseenter", function() {
        $(this).addClass("active");
      })
      .on("mouseleave", function() {