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49 lines
2.0 KiB
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49 lines
2.0 KiB
Plaintext
---
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title: 対応ファイル形式
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description: Twenty でのデータインポートで対応しているファイル形式。
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---
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## 対応形式
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Twenty はインポート用に 3 種類のファイル形式に対応しています:
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| 形式 | 拡張子 | ノート |
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| ---------------- | ----- | ------------ |
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| **CSV** | .csv | 推奨（最も互換性が高い） |
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| **Excel** | .xlsx | 現行の Excel 形式 |
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| **Excel (レガシー)** | .xls | 旧 Excel 形式 |
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## ファイル要件
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| 要件 | 値 |
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| ------------ | --------------------- |
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| **エンコーディング** | UTF-8 を推奨 |
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| **レコード数の上限** | 1 ファイルあたり 10,000 レコード |
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| **構造** | 先頭行には列ヘッダーを含める必要があります |
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| **コンテンツ** | 1 ファイルにつき 1 種類のオブジェクト |
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## CSV ベストプラクティス
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* **区切り文字**: カンマ (`,`) またはセミコロン (`;`) を使用
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* **テキスト囲み文字**: カンマを含むテキストには二重引用符 (`"`) を使用
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* **改行コード**: Windows (CRLF) または Unix (LF) のどちらにも対応
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* **空の値**: セルは空のままにし、"NULL" や "N/A" は使用しないでください
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## Excel ベストプラクティス
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Excel からエクスポートする場合:
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* 数式を削除 (値のみをエクスポート),
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* 末尾の空行を削除
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* 結合セルがないことを確認
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* 最初のシートのみを使用
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## 大規模データセット
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10,000 レコードを超えるデータセットの場合:
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* 複数のファイルに分割
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* または、無制限のレコードに対応する [API インポート](/l/ja/user-guide/data-migration/how-tos/import-data-via-api) を使用
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<Note>非常に大規模な移行 (100,000 レコード以上) の場合、API は CSV インポートよりも大幅に高速で信頼性も高くなります。</Note>
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