---
title: Supabase Vector Store
---

[supabase.com](https://supabase.com/)

To use this vector store, you need a Supabase project. You can create one at [supabase.com](https://supabase.com/).

## Installation

```package-install
npm i llamaindex @llamaindex/supabase
```

## Database Setup

Before using the vector store, you need to:
1. Enable the `pgvector` extension
2. Create a table for storing vectors
3. Create a vector similarity search function

```sql
create table documents (
id uuid primary key,
content text,
metadata jsonb,
embedding vector(1536)
);
```

-- Create a function for similarity search
```sql
create function match_documents (
query_embedding vector(1536),
match_count int
) returns table (
id uuid,
content text,
metadata jsonb,
embedding vector(1536),
similarity float
)
language plpgsql
as $$
begin
return query
select
id,
content,
metadata,
embedding,
1 - (embedding <=> query_embedding) as similarity
from documents
order by embedding <=> query_embedding
limit match_count;
end;
$$;
```

## Importing the modules

```ts
import { Document, VectorStoreIndex } from "llamaindex";
import { SupabaseVectorStore } from "@llamaindex/supabase";
```

## Setup Supabase

```ts
const vectorStore = new SupabaseVectorStore({
  supabaseUrl: process.env.SUPABASE_URL,
  supabaseKey: process.env.SUPABASE_KEY,
  table: "documents",
});
```

## Setup the index

```ts
const documents = [
  new Document({ 
    text: "Sample document text",
    metadata: { source: "example" }
  })
];

const storageContext = await storageContextFromDefaults({ vectorStore });
const index = await VectorStoreIndex.fromDocuments(documents, {
  storageContext,
});
```

## Query the index

```ts
const queryEngine = index.asQueryEngine();

const response = await queryEngine.query({
  query: "What is in the document?",
});

// Output response
console.log(response.toString());
```

## Full code

```ts
import { Document, VectorStoreIndex, storageContextFromDefaults } from "llamaindex";
import { SupabaseVectorStore } from "@llamaindex/supabase";

async function main() {
  // Initialize the vector store
  const vectorStore = new SupabaseVectorStore({
    supabaseUrl: process.env.SUPABASE_URL,
    supabaseKey: process.env.SUPABASE_KEY,
    table: "documents",
  });

  // Create sample documents
  const documents = [
    new Document({
      text: "Vector search enables semantic similarity search",
      metadata: {
        source: "research_paper",
        author: "Jane Smith",
      },
    }),
  ];

  // Create storage context
  const storageContext = await storageContextFromDefaults({ vectorStore });

  // Create and store embeddings
  const index = await VectorStoreIndex.fromDocuments(documents, {
    storageContext,
  });

  // Query the index
  const queryEngine = index.asQueryEngine();
  const response = await queryEngine.query({
    query: "What is vector search?",
  });

  // Output response
  console.log(response.toString());
}

main().catch(console.error);
```

## API Reference

- [SupabaseVectorStore](/docs/api/classes/SupabaseVectorStore)
