mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-26 09:32:01 +00:00
66 lines
2.5 KiB
Markdown
66 lines
2.5 KiB
Markdown
---
|
|
slug: /zh/operations/system-tables/distributed_ddl_queue
|
|
---
|
|
# system.distributed_ddl_queue {#system_tables-distributed_ddl_queue}
|
|
|
|
包含有关在集群上执行的[分布式ddl查询(集群环境)](../../sql-reference/distributed-ddl.md)的信息.
|
|
|
|
列信息:
|
|
|
|
- `entry` ([String](../../sql-reference/data-types/string.md)) — 查询ID.
|
|
- `host_name` ([String](../../sql-reference/data-types/string.md)) — 主机名称.
|
|
- `host_address` ([String](../../sql-reference/data-types/string.md)) — 主机名解析到的IP地址.
|
|
- `port` ([UInt16](../../sql-reference/data-types/int-uint.md)) — 主机端口.
|
|
- `status` ([Enum8](../../sql-reference/data-types/enum.md)) — 查询状态.
|
|
- `cluster` ([String](../../sql-reference/data-types/string.md)) — 群集名称.
|
|
- `query` ([String](../../sql-reference/data-types/string.md)) — 执行查询.
|
|
- `initiator` ([String](../../sql-reference/data-types/string.md)) — 执行查询的节点.
|
|
- `query_start_time` ([DateTime](../../sql-reference/data-types/datetime.md)) — 查询开始时间.
|
|
- `query_finish_time` ([DateTime](../../sql-reference/data-types/datetime.md)) — 查询结束时间.
|
|
- `query_duration_ms` ([UInt64](../../sql-reference/data-types/int-uint.md)) — 查询执行时间(毫秒).
|
|
- `exception_code` ([Enum8](../../sql-reference/data-types/enum.md)) — 来自于[ZooKeeper](../../operations/tips.md#zookeeper)的异常代码.
|
|
|
|
**示例**
|
|
|
|
``` sql
|
|
SELECT *
|
|
FROM system.distributed_ddl_queue
|
|
WHERE cluster = 'test_cluster'
|
|
LIMIT 2
|
|
FORMAT Vertical
|
|
|
|
Query id: f544e72a-6641-43f1-836b-24baa1c9632a
|
|
|
|
Row 1:
|
|
──────
|
|
entry: query-0000000000
|
|
host_name: clickhouse01
|
|
host_address: 172.23.0.11
|
|
port: 9000
|
|
status: Finished
|
|
cluster: test_cluster
|
|
query: CREATE DATABASE test_db UUID '4a82697e-c85e-4e5b-a01e-a36f2a758456' ON CLUSTER test_cluster
|
|
initiator: clickhouse01:9000
|
|
query_start_time: 2020-12-30 13:07:51
|
|
query_finish_time: 2020-12-30 13:07:51
|
|
query_duration_ms: 6
|
|
exception_code: ZOK
|
|
|
|
Row 2:
|
|
──────
|
|
entry: query-0000000000
|
|
host_name: clickhouse02
|
|
host_address: 172.23.0.12
|
|
port: 9000
|
|
status: Finished
|
|
cluster: test_cluster
|
|
query: CREATE DATABASE test_db UUID '4a82697e-c85e-4e5b-a01e-a36f2a758456' ON CLUSTER test_cluster
|
|
initiator: clickhouse01:9000
|
|
query_start_time: 2020-12-30 13:07:51
|
|
query_finish_time: 2020-12-30 13:07:51
|
|
query_duration_ms: 6
|
|
exception_code: ZOK
|
|
|
|
2 rows in set. Elapsed: 0.025 sec.
|
|
```
|