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30 lines
1.5 KiB
Markdown
30 lines
1.5 KiB
Markdown
---
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slug: /en/operations/system-tables/licenses
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---
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# licenses
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Contains licenses of third-party libraries that are located in the [contrib](https://github.com/ClickHouse/ClickHouse/tree/master/contrib) directory of ClickHouse sources.
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Columns:
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- `library_name` ([String](../../sql-reference/data-types/string.md)) — Name of the library, which is license connected with.
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- `license_type` ([String](../../sql-reference/data-types/string.md)) — License type — e.g. Apache, MIT.
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- `license_path` ([String](../../sql-reference/data-types/string.md)) — Path to the file with the license text.
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- `license_text` ([String](../../sql-reference/data-types/string.md)) — License text.
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**Example**
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``` sql
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SELECT library_name, license_type, license_path FROM system.licenses LIMIT 15
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```
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``` text
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┌─library_name───────┬─license_type─┬─license_path────────────────────────┐
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│ aws-c-common │ Apache │ /contrib/aws-c-common/LICENSE │
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│ base64 │ BSD 2-clause │ /contrib/aklomp-base64/LICENSE │
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│ brotli │ MIT │ /contrib/brotli/LICENSE │
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│ [...] │ [...] │ [...] │
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└────────────────────┴──────────────┴─────────────────────────────────────┘
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```
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