ClickHouse/docs/ja/sql-reference/dictionaries/index.md

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# 辞書 {#dictionaries}
辞書はマッピングです (`key -> attributes`)それはさまざまなタイプの参照リストのために便利です。
ClickHouseは、クエリで使用できる辞書を操作するための特別な関数をサポートしています。 関数で辞書を使用する方が簡単で効率的です。 `JOIN` 参照のテーブルを使って。
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DOCS-624: Fixing links to nowhere (#10675) * enbaskakova-DOCSUP-652 (#101) * "docs(orNull&orDefault): Functions 'orNull&orDefault' have been edited" * "docs(orNull&orDefault): Functions 'orNull&orDefault' have been edited" * "docs(orNull&orDefault): Functions 'orNull&orDefault' have been edited" * Update docs/en/sql_reference/aggregate_functions/combinators.md Co-Authored-By: BayoNet <da-daos@yandex.ru> * Update docs/en/sql_reference/aggregate_functions/combinators.md Co-Authored-By: BayoNet <da-daos@yandex.ru> * Update docs/en/sql_reference/aggregate_functions/combinators.md Co-Authored-By: BayoNet <da-daos@yandex.ru> * Update docs/en/sql_reference/aggregate_functions/combinators.md Co-Authored-By: BayoNet <da-daos@yandex.ru> * Update docs/en/sql_reference/aggregate_functions/combinators.md Co-Authored-By: BayoNet <da-daos@yandex.ru> * "docs(orNull&orDefault): Functions 'orNull&orDefault' have been edited" * "docs(orNull&orDefault): Functions 'orNull&orDefault' have been edited" * "docs(orNull&orDefault): Functions 'orNull&orDefault' have been edited" Co-authored-by: elenbaskakova <elenbaskakova@yandex-team.ru> Co-authored-by: BayoNet <da-daos@yandex.ru> * Revert "enbaskakova-DOCSUP-652 (#101)" (#107) This reverts commit 639fee7610f28e421d14e535b7def3f466e7efca. * CLICKHOUSEDOCS-624: Fixed links. Was 60, became 13. * CLICKHOUSEDOCS-624: Finished fix links in Enlish version. * CLICKHOUSEDOCS-624: Fixed RU links Co-authored-by: elenaspb2019 <47083263+elenaspb2019@users.noreply.github.com> Co-authored-by: elenbaskakova <elenbaskakova@yandex-team.ru> Co-authored-by: Sergei Shtykov <bayonet@yandex-team.ru>
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[NULL](../../sql-reference/syntax.md#null-literal) 値を辞書に格納することはできません。
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ClickHouseサポート:
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- [組み込み辞書](internal-dicts.md#internal_dicts) 特定の [関数のセット](../../sql-reference/functions/ym-dict-functions.md).
- [プラグイン(外部)辞書](external-dictionaries/external-dicts.md#dicts-external-dicts) と [関数のセット](../../sql-reference/functions/ext-dict-functions.md).
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[元の記事](https://clickhouse.tech/docs/en/query_language/dicts/) <!--hide-->