ClickHouse/docs/ru/operations/system-tables/licenses.md
2021-03-15 14:32:26 +03:00

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# system.licenses {#system-tables_system.licenses}
Содержит информацию о лицензиях сторонних библиотек, которые находятся в директории [contrib](https://github.com/ClickHouse/ClickHouse/tree/master/contrib) исходных кодов ClickHouse.
Столбцы:
- `library_name` ([String](../../sql-reference/data-types/string.md)) — Название библиотеки, к которой относится лицензия.
- `license_type` ([String](../../sql-reference/data-types/string.md)) — Тип лицензии, например, Apache, MIT.
- `license_path` ([String](../../sql-reference/data-types/string.md)) — Путь к файлу с текстом лицензии.
- `license_text` ([String](../../sql-reference/data-types/string.md)) — Текст лицензии.
**Пример**
``` sql
SELECT library_name, license_type, license_path FROM system.licenses LIMIT 15
```
``` text
┌─library_name───────┬─license_type─┬─license_path────────────────────────┐
│ FastMemcpy │ MIT │ /contrib/FastMemcpy/LICENSE │
│ arrow │ Apache │ /contrib/arrow/LICENSE.txt │
│ avro │ Apache │ /contrib/avro/LICENSE.txt │
│ aws-c-common │ Apache │ /contrib/aws-c-common/LICENSE │
│ aws-c-event-stream │ Apache │ /contrib/aws-c-event-stream/LICENSE │
│ aws-checksums │ Apache │ /contrib/aws-checksums/LICENSE │
│ aws │ Apache │ /contrib/aws/LICENSE.txt │
│ base64 │ BSD 2-clause │ /contrib/base64/LICENSE │
│ boost │ Boost │ /contrib/boost/LICENSE_1_0.txt │
│ brotli │ MIT │ /contrib/brotli/LICENSE │
│ capnproto │ MIT │ /contrib/capnproto/LICENSE │
│ cassandra │ Apache │ /contrib/cassandra/LICENSE.txt │
│ cctz │ Apache │ /contrib/cctz/LICENSE.txt │
│ cityhash102 │ MIT │ /contrib/cityhash102/COPYING │
│ cppkafka │ BSD 2-clause │ /contrib/cppkafka/LICENSE │
└────────────────────┴──────────────┴─────────────────────────────────────┘
```