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* 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 639fee7610
.
* 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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machine_translated | machine_translated_rev | toc_folder_title | toc_priority | toc_title |
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true | e8cd92bba3 |
Sözlükler | 35 | Giriş |
Sözlükler
Bir sözlük bir haritalama (key -> attributes
) bu referans listeleri çeşitli türleri için uygundur.
ClickHouse, sorgularda kullanılabilecek sözlüklerle çalışmak için özel işlevleri destekler. Sözlükleri işlevlerle kullanmak daha kolay ve daha verimlidir. JOIN
referans tabloları ile.
NULL değerler sözlükte saklanamaz.
ClickHouse destekler:
- Dahili sözlükler bir özel ile fonksiyonlar kümesi.
- Eklenti (harici) söz dictionarieslükler ile bir fonksiyonlar net.