system.licenses 

Сontains licenses of third-party libraries that are located in the contrib directory of ClickHouse sources.

Columns:

  • library_name (String) — Name of the library, which is license connected with.
  • license_type (String) — License type — e.g. Apache, MIT.
  • license_path (String) — Path to the file with the license text.
  • license_text (String) — License text.

Example

SELECT library_name, license_type, license_path FROM system.licenses LIMIT 15
┌─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           │
└────────────────────┴──────────────┴─────────────────────────────────────┘

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