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Azure SQL Database to MotherDuck integration

Replicate your Azure SQL Database data into MotherDuck with Weld. Automatically replicate the tables you choose from Azure SQL Database into MotherDuck, keeping your analytics layer up to date and ready for querying.

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4.8 on G2
Azure SQL DatabaseSource
WeldWeld
MotherDuckWarehouse
Weld · New sync
Azure SQL DatabaseSourceAzure SQL DatabaseConnected
Tables to sync

Your own tables, picked when you set up the sync.

  • Extract
  • Load
  • Keep in sync
MotherDuckDestinationMotherDuckReady
azure_sql_database schema
  • azure_sql_database.Synced
  • azure_sql_database.Syncing
  • azure_sql_database.Synced
  • azure_sql_database.Synced

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How it works

How to set up Azure SQL Database to MotherDuck in Weld.
In the app, with the API or an agent.

Setup guideAPI guideMCP docs
Weld · New Azure SQL Database sync
Azure SQL DatabaseNew connectionAzure SQL DatabaseAuthorised
Connection nameazure_sql_database
AuthorizeOpens Azure SQL Database to grant read access
Use cases

Why replicate Azure SQL Database to MotherDuck?
Ready for analysis.

Centralizing your Azure SQL Database data in MotherDuck lets you join it with other data sources for cross-platform analytics and deeper insights.

Build reliable dashboards and reports by querying Azure SQL Database data directly in MotherDuck using SQL or your preferred BI tool.

Consolidate data from Azure SQL Database alongside other databases and applications in a single database for a unified analytical layer.

  • Database replication for analytics

    Replicate your Azure SQL Database production data to MotherDuck without impacting database performance. Query historical data without load on your primary database.

  • Centralized data warehouse

    Bring Azure SQL Database data into MotherDuck alongside other sources to create a single source of truth for your organization.

  • Automated reporting

    Replace manual exports and spreadsheet-based reporting with automated pipelines from Azure SQL Database to MotherDuck. Connect BI tools like Looker, Metabase, or Power BI.

Data

What data can you replicate?
From Azure SQL Database to MotherDuck.

Weld syncs the objects the Azure SQL Database connector exposes into MotherDuck, and you choose which tables and fields to include. The connector's docs list what is available.

    Weld MCP server

    Ask your agent.
    It queries MotherDuck for you.

    Connect Claude, Cursor, ChatGPT or your own agent to Weld over MCP. It reads the Azure SQL Database context, finds the tables it needs and runs the query in MotherDuck.

    Set up the MCP serverClaudeCursorChatGPTGemini
    Claude CodeOpus 5
    >

    Which Azure SQL Database tables do we have in MotherDuck, and which is the largest?

    Looking up what Weld has synced from Azure SQL Database.

    ●weld·search_available_references
    ⎿raw.azure_sql_database.*
    tables, columns and freshness
    ●weld·get_reference_schema
    ⎿columns, types and nullability
    ●weld·run_query
    ⎿select count(*) from {{raw.azure_sql_database.…}}
    submitted
    ●weld·get_query_status
    ⎿DONE
    ●weld·get_query_result
    ⎿rows returned
    ✓Answered from Azure SQL Database data in MotherDuck
    >Ask about your Azure SQL Database data
    Under the hood

    Technical considerations.
    What to expect.

    Incremental syncing
    Weld uses incremental syncing where supported by the Azure SQL Database API, loading only new and updated records to minimize data transfer and warehouse costs.
    Change data capture
    For Azure SQL Database, Weld can use log-based replication (CDC) to capture inserts, updates, and deletes without querying the entire table on every sync.
    Schema handling
    Weld automatically manages schema changes. If Azure SQL Database adds new fields, they're detected and added to the corresponding MotherDuck tables.
    Data freshness
    Sync frequency depends on your Weld plan. Most connectors support schedules from every 5 minutes up to daily intervals.
    Security
    All data is encrypted in transit (TLS) and at rest. Weld is SOC 2 Type II compliant and supports IP whitelisting for database connections.
    Resources

    Keep reading.
    Guides, docs and schema.

    Documentation

    Azure SQL Database setup guide

    How to connect Azure SQL Database to Weld, step by step.

    Documentation

    MotherDuck setup guide

    How to connect MotherDuck to Weld, step by step.

    Connector

    Azure SQL Database connector

    Everything Weld does with Azure SQL Database.

    Connector

    MotherDuck connector

    Everything Weld does with MotherDuck.

    FAQ

    Common questions.
    About Azure SQL Database to MotherDuck.

    Start syncing Azure SQL Database to MotherDuck.

    Set up your Azure SQL Database data pipeline in minutes. No credit card required. Free for 14 days.

    Azure SQL DatabaseSource
    WeldWeld
    MotherDuckWarehouse
    Start for freeTalk to us
    Related

    Related integrations.
    More with Azure SQL Database and MotherDuck.

    View all