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36 lines
1.5 KiB
Markdown
36 lines
1.5 KiB
Markdown
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# system.errors {#system_tables-errors}
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包含错误代码和它们被触发的次数.
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列信息:
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- `name` ([String](../../sql-reference/data-types/string.md)) — 错误名称 (`errorCodeToName`).
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- `code` ([Int32](../../sql-reference/data-types/int-uint.md)) — 错误码.
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- `value` ([UInt64](../../sql-reference/data-types/int-uint.md)) — 发生此错误的次数.
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- `last_error_time` ([DateTime](../../sql-reference/data-types/datetime.md)) — 上一次错误发生的时间.
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- `last_error_message` ([String](../../sql-reference/data-types/string.md)) — 最后一个错误的消息.
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- `last_error_trace` ([Array(UInt64)](../../sql-reference/data-types/array.md)) — 一个[堆栈跟踪](https://en.wikipedia.org/wiki/Stack_trace), 它表示存储被调用方法的物理地址列表.
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- `remote` ([UInt8](../../sql-reference/data-types/int-uint.md)) — 远程异常(即在一个分布式查询期间接收的).
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**示例**
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``` sql
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SELECT name, code, value
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FROM system.errors
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WHERE value > 0
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ORDER BY code ASC
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LIMIT 1
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┌─name─────────────┬─code─┬─value─┐
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│ CANNOT_OPEN_FILE │ 76 │ 1 │
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└──────────────────┴──────┴───────┘
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```
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``` sql
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WITH arrayMap(x -> demangle(addressToSymbol(x)), last_error_trace) AS all
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SELECT name, arrayStringConcat(all, '\n') AS res
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FROM system.errors
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LIMIT 1
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SETTINGS allow_introspection_functions=1\G
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```
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