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n8n-nodes-opengauss-datavec

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n8n community node for openGauss DataVec vector database

Package Exports

  • n8n-nodes-opengauss-datavec
  • n8n-nodes-opengauss-datavec/dist/nodes/VectorStoreOpenGauss/VectorStoreOpenGauss.node.js

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Readme

n8n-nodes-opengauss-datavec

An n8n community node package for openGauss DataVec — provides both an AI Vector Store node for RAG/agent workflows and a general-purpose SQL node for standard database operations.

Features

Vector Store Node (openGauss DataVec Store)

AI Vector Store sub-node that integrates with n8n AI Agent, Retriever, and other LangChain nodes.

  • Get Many — Vector similarity search, returns Top-K results
  • Insert Documents — Insert documents with embeddings (auto-creates table on first run)
  • Retrieve Documents (As Vector Store) — Use as a Vector Store Retriever sub-node
  • Retrieve Documents (As Tool for AI Agent) — Use as an AI Agent tool node

Configurable: Schema, Table, Dimensions, Distance Strategy, Top K, Metadata Filter.

SQL Node (openGauss)

General-purpose execution node for standard database operations.

  • Execute SQL — Run arbitrary SQL queries
  • Insert / Update / Upsert / Delete / Select — CRUD operations with a visual UI

Configurable: Schema, Table, Columns, WHERE conditions, etc.

Supported Distance Metrics

Metric Description
L2 Euclidean distance
Cosine Cosine similarity
Inner Product Dot product similarity
Manhattan Manhattan (L1) distance

Supported Index Types

Index Description
HNSW Hierarchical Navigable Small World graph index
IVFFLAT Inverted file with flat quantization
DISKANN Disk-based approximate nearest neighbor

Prerequisites

  • openGauss 7.0+ with DataVec extension enabled
  • n8n instance (self-hosted or cloud)

Installation

Via n8n Community Nodes

  1. Go to Settings > Community Nodes in your n8n instance
  2. Search for n8n-nodes-opengauss-datavec
  3. Click Install

Via npm

npm install n8n-nodes-opengauss-datavec

Quick Start

See docs/USAGE_GUIDE.md for detailed usage instructions and workflow examples.

Credentials

Both nodes share the openGauss DataVec credential (Host, Port, Database, User, Password).

License

MIT