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+---
+layout: integration
+name: MariaDB
+description: A Document Store for storing and retrieval from MariaDB 11.7+ using native VECTOR support
+authors:
+    - name: deepset
+      socials:
+        github: deepset-ai
+        twitter: Haystack_AI
+        linkedin: https://www.linkedin.com/company/deepset-ai/
+pypi: https://pypi.org/project/mariadb-haystack/
+repo: https://github.com/deepset-ai/haystack-core-integrations/tree/main/integrations/mariadb
+type: Document Store
+report_issue: https://github.com/deepset-ai/haystack-core-integrations/issues
+version: Haystack 2.0
+toc: true
+---
+
+[![PyPI - Version](https://img.shields.io/pypi/v/mariadb-haystack.svg)](https://pypi.org/project/mariadb-haystack/)
+[![PyPI - Python Version](https://img.shields.io/pypi/pyversions/mariadb-haystack.svg)](https://pypi.org/project/mariadb-haystack/)
+[![test](https://github.com/deepset-ai/haystack-core-integrations/actions/workflows/mariadb.yml/badge.svg)](https://github.com/deepset-ai/haystack-core-integrations/actions/workflows/mariadb.yml)
+
+-----
+
+**Table of Contents**
+
+- MariaDB Document Store for Haystack
+  - [Installation](#installation)
+  - [Usage](#usage)
+  - [License](#license)
+
+## Installation
+
+MariaDB 11.7+ introduced a native `VECTOR` datatype with HNSW-based indexing, enabling efficient vector similarity search directly in the database.
+
+To quickly set up a MariaDB instance, you can use Docker:
+
+```bash
+docker run -d -p 3306:3306 \
+  -e MARIADB_ROOT_PASSWORD=secret \
+  -e MARIADB_DATABASE=haystack \
+  -e MARIADB_USER=haystack \
+  -e MARIADB_PASSWORD=secret \
+  mariadb:11.7
+```
+
+The `mariadb` connector is a C extension built from source, so it needs the MariaDB Connector/C system library (`mariadb_config`):
+
+```bash
+# Ubuntu / Debian
+sudo apt-get install -y libmariadb-dev
+
+# macOS
+brew install mariadb-connector-c
+```
+
+Use `pip` to install `mariadb-haystack`:
+
+```bash
+pip install mariadb-haystack
+```
+
+## Usage
+
+Set the connection credentials as environment variables:
+
+```bash
+export MARIADB_USER=haystack
+export MARIADB_PASSWORD=secret
+```
+
+Then initialize `MariaDBDocumentStore`:
+
+```python
+from haystack_integrations.document_stores.mariadb import MariaDBDocumentStore
+
+document_store = MariaDBDocumentStore(
+    host="localhost",
+    port=3306,
+    database="haystack",
+    embedding_dimension=768,
+    distance="cosine",
+)
+```
+
+### Writing Documents
+
+```python
+from haystack import Document
+
+docs = [
+    Document(content="MariaDB supports native VECTOR type since 11.7"),
+    Document(content="Haystack makes building LLM pipelines easy"),
+]
+document_store.write_documents(docs)
+print(document_store.count_documents())
+```
+
+Note: the documents above have no embeddings. To store documents with embeddings for vector similarity search, use the indexing pipeline in the [Embedding Retrieval](#embedding-retrieval) section below.
+
+### Embedding Retrieval
+
+Install the `sentence-transformers-haystack` integration to use the embedders:
+
+```bash
+pip install sentence-transformers-haystack
+```
+
+```python
+from haystack import Pipeline
+from haystack.components.writers import DocumentWriter
+from haystack_integrations.components.embedders.sentence_transformers import (
+    SentenceTransformersDocumentEmbedder,
+    SentenceTransformersTextEmbedder,
+)
+from haystack_integrations.components.retrievers.mariadb import MariaDBEmbeddingRetriever
+
+# Indexing
+indexing = Pipeline()
+indexing.add_component("embedder", SentenceTransformersDocumentEmbedder())
+indexing.add_component("writer", DocumentWriter(document_store))
+indexing.connect("embedder", "writer")
+indexing.run({"embedder": {"documents": docs}})
+
+# Querying
+querying = Pipeline()
+querying.add_component("embedder", SentenceTransformersTextEmbedder())
+querying.add_component("retriever", MariaDBEmbeddingRetriever(document_store=document_store, top_k=3))
+querying.connect("embedder", "retriever")
+results = querying.run({"embedder": {"text": "vector similarity search"}})
+```
+
+### Keyword Retrieval
+
+```python
+from haystack_integrations.components.retrievers.mariadb import MariaDBKeywordRetriever
+
+retriever = MariaDBKeywordRetriever(document_store=document_store, top_k=3)
+results = retriever.run(query="vector search")
+```
+
+## License
+
+`mariadb-haystack` is distributed under the terms of the [Apache-2.0](https://spdx.org/licenses/Apache-2.0.html) license.