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README

Databend

Enterprise Data Warehouse for AI Agents

Large-scale analytics, vector search, full-text search — with flexible agent orchestration and secure Python UDF sandboxes. Built for enterprise AI workloads.

☁️ Try Cloud🚀 Quick Start📖 Documentation💬 Slack

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databend

💡 Why Databend?

Databend is an open-source enterprise data warehouse built in Rust.

Core capabilities: Analytics, vector search, full-text search, auto schema evolution — unified in one engine.

Agent-ready: Sandbox UDFs for agent logic, SQL for orchestration, transactions for reliability, branching for safe experimentation on production data.

📊 Core Engine

Analytics, vector search, full-text search, auto schema evolution, transactions. | 🤖 Agent-Ready

Sandbox UDF + SQL orchestration. Build and run agents on your enterprise data. | | 🏢 Enterprise Scale

Elastic compute, cloud native. S3/Azure/GCS. | 🌿 Branching

Git-like data versioning. Agents safely operate on production snapshots. |

Databend Architecture

⚡ Quick Start

1. Cloud (Recommended)

Start for free on Databend Cloud — Production-ready in 60 seconds.

2. Local (Python)

Ideal for development and testing. Requires Python 3.12 or 3.13 and databend-driver 0.34.0 or later:

pip install "databend-driver[local]>=0.34.0"
from databend_driver import connect

conn = connect("databend+local:///./local-state")
print(conn.query_row("SELECT 'Hello, Databend!'").values())

3. Docker

Run the full warehouse locally:

docker run -p 8000:8000 datafuselabs/databend

🤖 Agent-Ready Architecture

Databend's Sandbox UDF enables flexible agent orchestration with a three-layer architecture:

  • Control Plane: Resource scheduling, permission validation, sandbox lifecycle management
  • Execution Plane (Databend): SQL orchestration, issues requests via Arrow Flight
  • Compute Plane (Sandbox Workers): Isolated sandboxes running your agent logic
-- Define your agent logic
CREATE FUNCTION my_agent(input STRING) RETURNS STRING
LANGUAGE python HANDLER = 'run'
AS $$
def run(input):
    # Your agent logic: LLM calls, tool use, reasoning...
    return response
$$;

-- Orchestrate agents with SQL
SELECT my_agent(question) FROM tasks;

🚀 Use Cases

  • AI Agents: Sandbox UDF + SQL orchestration + branching for safe operations
  • Analytics & BI: Large-scale SQL analytics — Learn more
  • Search & RAG: Vector + full-text search — Learn more

🤝 Community & Support

Contributors are immortalized in the system.contributors table 🏆

📄 License

Apache 2.0 + Elastic 2.0 | Licensing FAQ


Enterprise warehouse, agent ready

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Core symbols most depended-on inside this repo

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Shape

Method 20,660
Function 8,672
Class 4,538
Enum 794
Interface 385
Route 41

Languages

Rust97%
Python3%
C1%
Java1%
TypeScript1%

Modules by API surface

src/query/settings/src/settings_getter_setter.rs253 symbols
src/query/sql/tests/it/framework/lite_context.rs240 symbols
src/query/service/tests/it/storages/fuse/operations/commit.rs184 symbols
src/query/service/tests/it/sql/exec/get_table_bind_test.rs184 symbols
src/query/expression/src/types/decimal.rs171 symbols
src/common/metrics/src/metrics/storage.rs152 symbols
src/common/base/src/base/ordered_float.rs137 symbols
src/query/ast/src/parser/statement.rs132 symbols
src/query/sql/src/planner/plans/scalar_expr.rs122 symbols
src/query/expression/src/schema.rs106 symbols
src/query/expression/src/utils/date_helper.rs102 symbols
src/meta/app/src/schema/table/mod.rs99 symbols

Used by 1 indexed graphs manifest dependencies, hub-wide

Datastores touched

(mysql)Database · 1 repos
metastoreDatabase · 1 repos

For agents

$ claude mcp add databend \
  -- python -m otcore.mcp_server <graph>

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