thevar1able/ClickHouse
1
0
Fork 0
mirror of https://github.com/ClickHouse/ClickHouse.git synced 2024-11-10 09:32:06 +00:00
Code Issues Packages Projects Releases Wiki Activity

Update system_tables.md

Browse Source
This commit is contained in:
alexey-milovidov 2019-12-03 01:32:19 +03:00 committed by GitHub
parent 4bfa0117fc
commit e85223ce5e
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 16 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
docs/en/operations/system_tables.md
View File

@ -437,17 +437,17 @@ Columns:
- 0 — Query was initiated by another query for distributed query execution.
- `user` (String) — Name of the user who initiated the current query.
- `query_id` (String) — ID of the query.
- `address` (FixedString(16)) — IP address the query was initiated from.
- `address` (IPv6) — IP address that was used to make the query.
- `port` (UInt16) — The client port that was used to make the query.
- `initial_user` (String) — Name of the user who ran the parent query (for distributed query execution).
- `initial_query_id` (String) — ID of the parent query.
- `initial_address` (FixedString(16)) — IP address that the parent query was launched from.
- `initial_user` (String) — Name of the user who ran the initial query (for distributed query execution).
- `initial_query_id` (String) — ID of the initial query (for distributed query execution).
- `initial_address` (IPv6) — IP address that the parent query was launched from.
- `initial_port` (UInt16) — The client port that was used to make the parent query.
- `interface` (UInt8) — Interface that the query was initiated from. Possible values:
- 1 — TCP.
- 2 — HTTP.
- `os_user` (String) — OS's username who runs [clickhouse-client](../interfaces/cli.md).
- `client_hostname` (String) — Server name that the [clickhouse-client](../interfaces/cli.md) or another TCP client is connected to.
- `client_hostname` (String) — Hostname of the client machine where the [clickhouse-client](../interfaces/cli.md) or another TCP client is run.
- `client_name` (String) — The [clickhouse-client](../interfaces/cli.md) or another TCP client name.
- `client_revision` (UInt32) — Revision of the [clickhouse-client](../interfaces/cli.md) or another TCP client.
- `client_version_major` (UInt32) — Major version of the [clickhouse-client](../interfaces/cli.md) or another TCP client.
@ -491,8 +491,8 @@ To enable query logging, set the [log_query_threads](settings/settings.md#settin
Columns:
- `event_date` (Date) — Thread starting date.
- `event_time` (DateTime) — Thread starting time.
- `event_date` (Date) — the date when the thread has finished execution of the query.
- `event_time` (DateTime) — the date and time when the thread has finished execution of the query.
- `query_start_time` (DateTime) — Start time of query execution.
- `query_duration_ms` (UInt64) — Duration of query execution.
- `read_rows` (UInt64) — Number of read rows.
@ -500,29 +500,29 @@ Columns:
- `written_rows` (UInt64) — For `INSERT` queries, the number of written rows. For other queries, the column value is 0.
- `written_bytes` (UInt64) — For `INSERT` queries, the number of written bytes. For other queries, the column value is 0.
- `memory_usage` (Int64) — Memory consumption by the whole query.
- `peak_memory_usage` (Int64) — Maximum memory consumption by the query.
- `peak_memory_usage` (Int64) — Maximum memory consumption by the whole query.
- `thread_name` (String) — Name of the thread.
- `thread_number` (UInt32) — Internal thread ID.
- `os_thread_id` (Int32) — OS thread ID.
- `master_thread_number` (UInt32) — Internal ID of initial thread.
- `master_os_thread_id` (Int32) — OS initial thread ID.
- `master_os_thread_id` (Int32) — OS initial ID of initial thread.
- `query` (String) — Query string.
- `is_initial_query` (UInt8) — Query type. Possible values:
- 1 — Query was initiated by the client.
- 0 — Query was initiated by another query for distributed query execution.
- `user` (String) — Name of the user who initiated the current query.
- `query_id` (String) — ID of the query.
- `address` (FixedString(16)) — IP address the query was initiated from.
- `address` (IPv6) — IP address that was used to make the query.
- `port` (UInt16) — The client port that was used to make the query.
- `initial_user` (String) — Name of the user who ran the parent query (for distributed query execution).
- `initial_query_id` (String) — ID of the parent query.
- `initial_address` (FixedString(16)) — IP address that the parent query was launched from.
- `initial_user` (String) — Name of the user who ran the initial query (for distributed query execution).
- `initial_query_id` (String) — ID of the initial query (for distributed query execution).
- `initial_address` (IPv6) — IP address that the parent query was launched from.
- `initial_port` (UInt16) — The client port that was used to make the parent query.
- `interface` (UInt8) — Interface that the query was initiated from. Possible values:
- 1 — TCP.
- 2 — HTTP.
- `os_user` (String) — OS's username who runs [clickhouse-client](../interfaces/cli.md).
- `client_hostname` (String) — Server name that the [clickhouse-client](../interfaces/cli.md) or another TCP client is connected to.
- `client_hostname` (String) — Hostname of the client machine where the [clickhouse-client](../interfaces/cli.md) or another TCP client is run.
- `client_name` (String) — The [clickhouse-client](../interfaces/cli.md) or another TCP client name.
- `client_revision` (UInt32) — Revision of the [clickhouse-client](../interfaces/cli.md) or another TCP client.
- `client_version_major` (UInt32) — Major version of the [clickhouse-client](../interfaces/cli.md) or another TCP client.
@ -535,8 +535,8 @@ Columns:
- `http_user_agent` (String) — The `UserAgent` header passed in the HTTP request.
- `quota_key` (String) — The "quota key" specified in the [quotas](quotas.md) setting (see `keyed`).
- `revision` (UInt32) — ClickHouse revision.
- `ProfileEvents.Names` (Array(String)) — Counters that measure different metrics. The description of them could be found in the table [system.events](#system_tables-events)
- `ProfileEvents.Values` (Array(UInt64)) — Values of metrics that are listed in the `ProfileEvents.Names` column.
- `ProfileEvents.Names` (Array(String)) — Counters that measure different metrics for this thread. The description of them could be found in the table [system.events](#system_tables-events)
- `ProfileEvents.Values` (Array(UInt64)) — Values of metrics for this thread that are listed in the `ProfileEvents.Names` column.
By default, logs are added to the table at intervals of 7.5 seconds. You can set this interval in the [query_thread_log](server_settings/settings.md#server_settings-query-thread-log) server setting (see the `flush_interval_milliseconds` parameter). To flush the logs forcibly from the memory buffer into the table, use the `SYSTEM FLUSH LOGS` query.