clickshack
Copyright (c) 2026 clickshack contributors

---

This product includes code derived from ClickHouse
(https://github.com/ClickHouse/ClickHouse),
licensed under the Apache License, Version 2.0.

  Copyright 2016-2026 ClickHouse, Inc.

The derived code is located in the `ported_clickhouse/` directory.
The Apache License, Version 2.0 applies to all files in that directory;
see ported_clickhouse/LICENSE for the full license text.

Modifications made relative to the ClickHouse originals:
- Include paths rewritten to `ported_clickhouse/...`
- Dependencies on Boost, ICU, and ClickHouse-internal IO/formatting
  layers removed or replaced with standard-library equivalents
- Files pruned to the subset required by the clickshack SELECT dialect parser
- Some shim types and bridge AST nodes added

For a file-by-file account of what was ported and what was changed,
see docs/ported_clickhouse_manifest.md.
