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Merge pull request #28162 from olgarev/revolg-DOCSUP-13597-Right_and_full_join_for_MergeJoin

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DOCSUP-13597: RIGHT and FULL join for MergeJoin
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Maksim Kita 2021-08-31 12:07:16 +03:00 committed by GitHub
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docs/en/sql-reference/statements/select/join.md
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@ -36,6 +36,9 @@ Additional join types available in ClickHouse:
- `LEFT ANY JOIN`, `RIGHT ANY JOIN` and `INNER ANY JOIN`, partially (for opposite side of `LEFT` and `RIGHT`) or completely (for `INNER` and `FULL`) disables the cartesian product for standard `JOIN` types.
- `ASOF JOIN` and `LEFT ASOF JOIN`, joining sequences with a non-exact match. `ASOF JOIN` usage is described below.
!!! note "Note"
When [join_algorithm](../../../operations/settings/settings.md#settings-join_algorithm) is set to `partial_merge`, `RIGHT JOIN` and `FULL JOIN` are supported only with `ALL` strictness (`SEMI`, `ANTI`, `ANY`, and `ASOF` are not supported).
## Settings {#join-settings}
The default join type can be overridden using [join_default_strictness](../../../operations/settings/settings.md#settings-join_default_strictness) setting.

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docs/ru/sql-reference/statements/select/join.md
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@ -36,6 +36,9 @@ FROM <left_table>
- `LEFT ANY JOIN`, `RIGHT ANY JOIN` и `INNER ANY JOIN`, Частично (для противоположных сторон `LEFT` и `RIGHT`) или полностью (для `INNER` и `FULL`) отключает декартово произведение для стандартных видов `JOIN`.
- `ASOF JOIN` и `LEFT ASOF JOIN`, Для соединения последовательностей по нечеткому совпадению. Использование `ASOF JOIN` описано ниже.
!!! note "Примечание"
Если настройка [join_algorithm](../../../operations/settings/settings.md#settings-join_algorithm) установлена в значение `partial_merge`, то для `RIGHT JOIN` и `FULL JOIN` поддерживается только уровень строгости `ALL` (`SEMI`, `ANTI`, `ANY` и `ASOF` не поддерживаются).
## Настройки {#join-settings}
Значение строгости по умолчанию может быть переопределено с помощью настройки [join_default_strictness](../../../operations/settings/settings.md#settings-join_default_strictness).