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Update the setting

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Добавил еще две системные таблицы в описание.
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Dmitriy 2021-09-16 23:31:30 +03:00
parent a61a139632
commit b4b9859ff9
3 changed files with 8 additions and 4 deletions
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8
docs/en/operations/settings/settings.md
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@ -3569,13 +3569,13 @@ Default value: `1000`.
## log_queries_probability {#log-queries-probability} ## log_queries_probability {#log-queries-probability}
Allows a user to write to [query_log](../../operations/system-tables/query_log.md) system table only a sample of queries selected randomly with the specified probability. It helps to reduce the load with a large volume of queries in a second. Allows a user to write to [query_log](../../operations/system-tables/query_log.md), [query_thread_log](../../operations/system-tables/query_thread_log.md), and [query_views_log](../../operations/system-tables/query_views_log.md) system tables only a sample of queries selected randomly with the specified probability. It helps to reduce the load with a large volume of queries in a second.
Possible values: Possible values:
- 0 — Queries are not logged in `query_log`. - 0 — Queries are not logged in tables.
- Positive floating-point number in the range [0..1]. For example, if the setting value is `0,5`, about half of the queries are logged in `query_log`. - Positive floating-point number in the range [0..1]. For example, if the setting value is `0,5`, about half of the queries are logged in tables.
- 1 — All queries are logged in `query_log`. - 1 — All queries are logged in tables.
Default value: `1`. Default value: `1`.

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docs/en/operations/system-tables/query_thread_log.md
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@ -11,6 +11,8 @@ The flushing period of data is set in `flush_interval_milliseconds` parameter of
ClickHouse does not delete data from the table automatically. See [Introduction](../../operations/system-tables/index.md#system-tables-introduction) for more details. ClickHouse does not delete data from the table automatically. See [Introduction](../../operations/system-tables/index.md#system-tables-introduction) for more details.
You can use the [log_queries_probability](../../operations/settings/settings.md#log-queries-probability) setting to set the probability with which queries are registered in the `query_thread_log` table.
Columns: Columns:
- `event_date` ([Date](../../sql-reference/data-types/date.md)) — The date when the thread has finished execution of the query. - `event_date` ([Date](../../sql-reference/data-types/date.md)) — The date when the thread has finished execution of the query.

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docs/en/operations/system-tables/query_views_log.md
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@ -11,6 +11,8 @@ The flushing period of data is set in `flush_interval_milliseconds` parameter of
ClickHouse does not delete data from the table automatically. See [Introduction](../../operations/system-tables/index.md#system-tables-introduction) for more details. ClickHouse does not delete data from the table automatically. See [Introduction](../../operations/system-tables/index.md#system-tables-introduction) for more details.
You can use the [log_queries_probability](../../operations/settings/settings.md#log-queries-probability) setting to set the probability with which queries are registered in the `query_views_log` table.
Columns: Columns:
- `event_date` ([Date](../../sql-reference/data-types/date.md)) — The date when the last event of the view happened. - `event_date` ([Date](../../sql-reference/data-types/date.md)) — The date when the last event of the view happened.