---
warning: DO NOT CHANGE THIS MANUALLY, THIS IS GENERATED BY https://github.com/duckdb/community-extensions repository, check README there
title: lsh
excerpt: |
  DuckDB Community Extensions
  Extension for locality-sensitive hashing (LSH)

extension:
  name: lsh
  description: Extension for locality-sensitive hashing (LSH)
  version: 0.2.5
  language: Rust
  build: cargo
  license: MIT
  excluded_platforms: "wasm_mvp;wasm_eh;wasm_threads;linux_amd64_musl"
  requires_toolchains: "rust;python3"
  maintainers:
    - yoonspark
    - ericmanning

repo:
  github: princeton-ddss/lsh
  ref: 66c2eb19ab6bc6f410a5fe07a5c3975d4aa158d9

docs:
  hello_world: |
    -- Create toy data
    CREATE TEMPORARY TABLE temp_names AS
    SELECT * FROM (
        VALUES
            ('Alice Johnson'),
            ('Robert Smith'),
            (NULL),
            ('Charlotte Brown'),
    ) AS t(name);

    -- Apply MinHash
    SELECT lsh_min(name, 2, 3, 2, 123) AS hash FROM temp_names;

  extended_description: |
    For more information regarding usage, see the [documentation](https://github.com/princeton-ddss/lsh).

extension_star_count: 14
extension_star_count_pretty: 14
extension_download_count: 635
extension_download_count_pretty: 635
image: '/images/community_extensions/social_preview/preview_community_extension_lsh.png'
layout: community_extension_doc
---
### Compatibility Matrix

This table covers all DuckDB releases that have not reached [end-of-life](https://duckdb.org/release_calendar), including LTS releases, and shows the 2 most recent patch releases of each. Older patch releases are not listed, but the extension may be available for them as well.

<div class="extension_compatibility_table"></div>

| Platform | 1.4.4 | 1.4.5 | 1.5.5 | 1.5.6 | 2.0.0 |
| :--- | :---: | :---: | :---: | :---: | :---: |
| Linux AMD64 | ✅ | ❌ | ❌ | ❌ | ❌ |
| Linux ARM64 | ✅ | ❌ | ❌ | ❌ | ❌ |
| macOS AMD64 | ✅ | ❌ | ❌ | ❌ | ❌ |
| macOS ARM64 | ✅ | ❌ | ❌ | ❌ | ❌ |
| Windows AMD64 | ✅ | ❌ | ❌ | ❌ | ❌ |
| Windows ARM64 | ❌ | ❌ | ❌ | ❌ | ❌ |
| WebAssembly | ❌ | ❌ | ❌ | ❌ | ❌ |

### Installing and Loading
```sql
INSTALL {{ page.extension.name }} FROM community;
LOAD {{ page.extension.name }};
```

{% if page.docs.hello_world %}
### Example
```sql
{{ page.docs.hello_world }}```
{% endif %}

{% if page.docs.extended_description %}
### About {{ page.extension.name }}
{{ page.docs.extended_description }}
{% endif %}
### Added Functions

<div class="extension_functions_table"></div>

|  function_name  | function_type |                                               description                                                |                       comment                        | examples |
|-----------------|---------------|----------------------------------------------------------------------------------------------------------|------------------------------------------------------|----------|
| lsh_min         | scalar        | Computes band hashes for each input string (or list of existing shingles) based on its MinHash signature | Produces list of 64-bit band hashes                  | NULL     |
| lsh_min32       | scalar        | Computes band hashes for each input string (or list of existing shingles) based on its MinHash signature | Reduces each band hash to 32 bits                    | NULL     |
| lsh_euclidean   | scalar        | Computes band hashes for each input point based on its Euclidean LSH signature                           | Produces list of 64-bit band hashes                  | NULL     |
| lsh_euclidean32 | scalar        | Computes band hashes for each input point based on its Euclidean LSH signature                           | Reduces each band hash to 32 bits                    | NULL     |
| lsh_jaccard     | scalar        | Computes Jaccard similarity for each input string pair                                                   | Accepts ngram argument, unlike core Jaccard function | NULL     |

### Overloaded Functions

<div class="extension_functions_table"></div>

This extension does not add any function overloads.

### Added Types

<div class="extension_types_table"></div>

This extension does not add any types.

### Added Settings

<div class="extension_settings_table"></div>

This extension does not add any settings.