mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-23 16:12:01 +00:00
37 lines
1.6 KiB
Markdown
37 lines
1.6 KiB
Markdown
# system.errors {#system_tables-errors}
|
|
|
|
Contains error codes with the number of times they have been triggered.
|
|
|
|
Columns:
|
|
|
|
- `name` ([String](../../sql-reference/data-types/string.md)) — name of the error (`errorCodeToName`).
|
|
- `code` ([Int32](../../sql-reference/data-types/int-uint.md)) — code number of the error.
|
|
- `value` ([UInt64](../../sql-reference/data-types/int-uint.md)) — the number of times this error has been happened.
|
|
- `last_error_time` ([DateTime](../../sql-reference/data-types/datetime.md)) — time when the last error happened.
|
|
- `last_error_message` ([String](../../sql-reference/data-types/string.md)) — message for the last error.
|
|
- `last_error_trace` ([Array(UInt64)](../../sql-reference/data-types/array.md)) — A [stack trace](https://en.wikipedia.org/wiki/Stack_trace) which represents a list of physical addresses where the called methods are stored.
|
|
- `remote` ([UInt8](../../sql-reference/data-types/int-uint.md)) — remote exception (i.e. received during one of the distributed query).
|
|
|
|
**Example**
|
|
|
|
``` sql
|
|
SELECT name, code, value
|
|
FROM system.errors
|
|
WHERE value > 0
|
|
ORDER BY code ASC
|
|
LIMIT 1
|
|
|
|
┌─name─────────────┬─code─┬─value─┐
|
|
│ CANNOT_OPEN_FILE │ 76 │ 1 │
|
|
└──────────────────┴──────┴───────┘
|
|
```
|
|
|
|
``` sql
|
|
WITH arrayMap(x -> demangle(addressToSymbol(x)), last_error_trace) AS all
|
|
SELECT name, arrayStringConcat(all, '\n') AS res
|
|
FROM system.errors
|
|
LIMIT 1
|
|
SETTINGS allow_introspection_functions=1\G
|
|
```
|
|
|