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MySQL on RDS to MotherDuck integration

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

Start for freeView setup guide
4.8 on G2
MySQL on RDSSource
WeldWeld
MotherDuckWarehouse
Weld · New sync
MySQL on RDSSourceMySQL on RDSConnected
Tables to sync

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

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

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How it works

How to set up MySQL on RDS to MotherDuck in Weld.
In the app, with the API or an agent.

Setup guideAPI guideMCP docs
Weld · New MySQL on RDS sync
MySQL on RDSNew connectionMySQL on RDSAuthorised
Connection namemysql_on_amazon_rds
AuthorizeOpens MySQL on RDS to grant read access
Use cases

Why replicate MySQL on RDS to MotherDuck?
Ready for analysis.

Centralizing your MySQL on RDS 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 MySQL on RDS data directly in MotherDuck using SQL or your preferred BI tool.

Consolidate data from MySQL on RDS alongside other databases and applications in a single database for a unified analytical layer.

  • Database replication for analytics

    Replicate your MySQL on RDS production data to MotherDuck without impacting database performance. Query historical data without load on your primary database.

  • Centralized data warehouse

    Bring MySQL on RDS 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 MySQL on RDS to MotherDuck. Connect BI tools like Looker, Metabase, or Power BI.

Data

What data can you replicate?
From MySQL on RDS to MotherDuck.

Weld syncs the objects the MySQL on RDS 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 MySQL on RDS context, finds the tables it needs and runs the query in MotherDuck.

    Set up the MCP serverClaudeCursorChatGPTGemini
    Claude CodeOpus 5
    >

    Which MySQL on RDS tables do we have in MotherDuck, and which is the largest?

    Looking up what Weld has synced from MySQL on RDS.

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

    Technical considerations.
    What to expect.

    Incremental syncing
    Weld uses incremental syncing where supported by the MySQL on RDS API, loading only new and updated records to minimize data transfer and warehouse costs.
    Change data capture
    For MySQL on RDS, 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 MySQL on RDS 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

    MySQL on RDS setup guide

    How to connect MySQL on RDS to Weld, step by step.

    Documentation

    MotherDuck setup guide

    How to connect MotherDuck to Weld, step by step.

    Connector

    MySQL on RDS connector

    Everything Weld does with MySQL on RDS.

    Connector

    MotherDuck connector

    Everything Weld does with MotherDuck.

    FAQ

    Common questions.
    About MySQL on RDS to MotherDuck.

    Start syncing MySQL on RDS to MotherDuck.

    Set up your MySQL on RDS data pipeline in minutes. No credit card required. Free for 14 days.

    MySQL on RDSSource
    WeldWeld
    MotherDuckWarehouse
    Start for freeTalk to us
    Related

    Related integrations.
    More with MySQL on RDS and MotherDuck.

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