ClickHouse/docs/en/operations/system-tables/licenses.md
2022-08-28 09:58:27 -04:00

43 lines
2.5 KiB
Markdown
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

---
slug: /en/operations/system-tables/licenses
---
# licenses
Сontains licenses of third-party libraries that are located in the [contrib](https://github.com/ClickHouse/ClickHouse/tree/master/contrib) directory of ClickHouse sources.
Columns:
- `library_name` ([String](../../sql-reference/data-types/string.md)) — Name of the library, which is license connected with.
- `license_type` ([String](../../sql-reference/data-types/string.md)) — License type — e.g. Apache, MIT.
- `license_path` ([String](../../sql-reference/data-types/string.md)) — Path to the file with the license text.
- `license_text` ([String](../../sql-reference/data-types/string.md)) — License text.
**Example**
``` 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 │
└────────────────────┴──────────────┴─────────────────────────────────────┘
```
[Original article](https://clickhouse.com/docs/en/operations/system-tables/licenses) <!--hide-->