---
warning: DO NOT CHANGE THIS MANUALLY, THIS IS GENERATED BY https://github.com/duckdb/community-extensions repository, check README there
title: capi_quack
excerpt: |
  DuckDB Community Extensions
  Provides a hello world example demo from the C/C++ C API template

extension:
  name: capi_quack
  description: Provides a hello world example demo from the C/C++ C API template
  version: 0.0.1
  language: C/C++
  build: CMake
  license: MIT
  requires_toolchains: "python3"
  maintainers:
    - samansmink

repo:
  github: duckdb/extension-template-c
  ref: 7f71365c5ce61b2b346717af07c9d448cfc9d3c3

docs:
  extended_description: |
    The capi_quack extension is based on DuckDB's [C/C++ C API template](https://github.com/duckdb/extension-template-c/).


extension_star_count: 33
extension_star_count_pretty: 33
extension_download_count: 1981
extension_download_count_pretty: 2.0k
image: '/images/community_extensions/social_preview/preview_community_extension_capi_quack.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 |
|---------------------------|---------------|-------------|---------|----------|
| multiply_numbers_together | scalar        | NULL        | 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>

|      name      |                       description                       | input_type | scope  | aliases | typed_value |
|----------------|---------------------------------------------------------|------------|--------|---------|-------------|
| temp_directory | Set the directory to which temporary files are written. | VARCHAR    | GLOBAL | []      | post.db.tmp |