How do I replicate MariaDB data to PostgreSQL?

Sign up for Weld, connect MariaDB as a source and PostgreSQL as a destination. Weld handles the extraction, loading, and lets you transform data using SQL or dbt.

What MariaDB data can I replicate to PostgreSQL?

You can replicate the objects the MariaDB connector exposes. The available objects depend on your MariaDB account permissions and configuration.

How often does Weld replicate data from MariaDB?

Sync frequency depends on your Weld plan. Schedules range from every 5 minutes to daily intervals. Each sync processes only new and changed data.

Can I transform MariaDB data before it lands in PostgreSQL?

Yes. Weld supports SQL-based transformations in the platform and integrates with dbt Cloud. You can clean, join, and model your data before analysis.

Is the MariaDB to PostgreSQL integration secure?

Yes. Weld encrypts all data in transit and at rest, is SOC 2 Type II certified, and supports IP whitelisting. Credentials are stored encrypted and never logged.

MariaDB to PostgreSQL integration

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

Start for free View setup guide

4.8 on G2

Source

Weld

Warehouse

Weld · New sync

SourceMariaDBConnected

Tables to sync

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

Extract
Load
Keep in sync

DestinationPostgreSQLReady

mariadb schema

mariadb.Synced
mariadb.Syncing
mariadb.Synced
mariadb.Synced

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How it works

How to set up MariaDB to PostgreSQL in Weld.
In the app, with the API or an agent.

Setup guide API guide MCP docs

Weld · New MariaDB sync

New connectionMariaDBAuthorised

Connection namemariadb

AuthorizeOpens MariaDB to grant read access

Use cases

Why replicate MariaDB to PostgreSQL?
Ready for analysis.

Centralizing your MariaDB data in PostgreSQL lets you join it with other data sources for cross-platform analytics and deeper insights.

Build reliable dashboards and reports by querying MariaDB data directly in PostgreSQL using SQL or your preferred BI tool.

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

Database replication for analytics
Replicate your MariaDB production data to PostgreSQL without impacting database performance. Query historical data without load on your primary database.
Centralized data warehouse
Bring MariaDB data into PostgreSQL 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 MariaDB to PostgreSQL. Connect BI tools like Looker, Metabase, or Power BI.

Data

What data can you replicate?
From MariaDB to PostgreSQL.

Weld syncs the objects the MariaDB connector exposes into PostgreSQL, 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 PostgreSQL for you.

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

Set up the MCP server

Claude CodeOpus 5

ConnectedWeld MCP

Which MariaDB tables do we have in PostgreSQL, and which is the largest?

Looking up what Weld has synced from MariaDB.

●weld·search_available_references

⎿raw.mariadb.*

tables, columns and freshness

●weld·get_reference_schema

⎿columns, types and nullability

●weld·run_query

⎿select count(*) from {{raw.mariadb.…}}

submitted

●weld·get_query_status

⎿DONE

●weld·get_query_result

⎿rows returned

✓Answered from MariaDB data in PostgreSQL

>Ask about your MariaDB dataMCP

Under the hood

Technical considerations.
What to expect.

Incremental syncing: Weld uses incremental syncing where supported by the MariaDB API, loading only new and updated records to minimize data transfer and warehouse costs.
Change data capture: For MariaDB, 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 MariaDB adds new fields, they're detected and added to the corresponding PostgreSQL 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

MariaDB setup guide

How to connect MariaDB to Weld, step by step.

Documentation

PostgreSQL setup guide

How to connect PostgreSQL to Weld, step by step.

Connector

MariaDB connector

Everything Weld does with MariaDB.

Connector

PostgreSQL connector

Everything Weld does with PostgreSQL.

FAQ

Common questions.
About MariaDB to PostgreSQL.

Start syncing MariaDB to PostgreSQL.

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

Source

Weld

Warehouse

Start for free Talk to us

Related integrations.
More with MariaDB and PostgreSQL.

View all

MariaDB to PostgreSQL integration

How to set up MariaDB to PostgreSQL in Weld.In the app, with the API or an agent.

Why replicate MariaDB to PostgreSQL?Ready for analysis.

Database replication for analytics

Centralized data warehouse

Automated reporting

What data can you replicate?From MariaDB to PostgreSQL.

Ask your agent.It queries PostgreSQL for you.

Technical considerations.What to expect.

Keep reading.Guides, docs and schema.

Common questions.About MariaDB to PostgreSQL.