2021-10-26 09:50:48 +00:00
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# system.crash_log {#system-tables_crash_log}
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包含有关致命错误堆栈跟踪的信息.该表默认不存在于数据库中, 仅在发生致命错误时才创建.
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列信息:
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- `event_date` ([Datetime](../../sql-reference/data-types/datetime.md)) — 事件日期.
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- `event_time` ([Datetime](../../sql-reference/data-types/datetime.md)) — 事件时间.
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- `timestamp_ns` ([UInt64](../../sql-reference/data-types/int-uint.md)) — 以纳秒为单位的事件时间戳.
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- `signal` ([Int32](../../sql-reference/data-types/int-uint.md)) — 信号编号.
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- `thread_id` ([UInt64](../../sql-reference/data-types/int-uint.md)) — 线程ID.
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- `query_id` ([String](../../sql-reference/data-types/string.md)) — 查询ID.
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- `trace` ([Array](../../sql-reference/data-types/array.md)([UInt64](../../sql-reference/data-types/int-uint.md))) — 崩溃时的堆栈跟踪.每个元素都是 ClickHouse 服务器进程内的一个虚拟内存地址.
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- `trace_full` ([Array](../../sql-reference/data-types/array.md)([String](../../sql-reference/data-types/string.md))) — 崩溃时的堆栈跟踪.每个元素在 ClickHouse 服务器进程中包含一个被调用的方法.
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- `version` ([String](../../sql-reference/data-types/string.md)) — ClickHouse 服务器版本.
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- `revision` ([UInt32](../../sql-reference/data-types/int-uint.md)) — ClickHouse 服务器订正版本.
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- `build_id` ([String](../../sql-reference/data-types/string.md)) — 编译器生成的 BuildID.
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2021-10-27 01:14:10 +00:00
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**案例**
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2021-10-26 09:50:48 +00:00
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查询:
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``` sql
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SELECT * FROM system.crash_log ORDER BY event_time DESC LIMIT 1;
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```
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结果 (部分):
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``` text
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Row 1:
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──────
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event_date: 2020-10-14
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event_time: 2020-10-14 15:47:40
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timestamp_ns: 1602679660271312710
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signal: 11
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thread_id: 23624
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query_id: 428aab7c-8f5c-44e9-9607-d16b44467e69
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trace: [188531193,...]
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trace_full: ['3. DB::(anonymous namespace)::FunctionFormatReadableTimeDelta::executeImpl(std::__1::vector<DB::ColumnWithTypeAndName, std::__1::allocator<DB::ColumnWithTypeAndName> >&, std::__1::vector<unsigned long, std::__1::allocator<unsigned long> > const&, unsigned long, unsigned long) const @ 0xb3cc1f9 in /home/username/work/ClickHouse/build/programs/clickhouse',...]
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version: ClickHouse 20.11.1.1
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revision: 54442
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build_id:
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```
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**另请参阅**
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- [trace_log](../../operations/system-tables/trace_log.md) 系统表
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2021-10-27 01:33:01 +00:00
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[原始文章](https://clickhouse.com/docs/en/operations/system-tables/crash-log)
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