Issue Creation Checklist

• I understand that my issue will be automatically closed if I don't fill in the requested information
• I have read the contribution guidelines

Feature Description

Implement dialect support for DuckDB / MotherDuck.

Describe the feature you'd like to see implemented

DuckDB is a popular in-process OLAP database. While ORM support is not a natural fit for OLAP query patterns generally, DuckDB/MotherDuck are also quite good at OLTP workloads. We also see customers migrating analytical workloads from transactional databases like Postgres -- it's a lot less work for them if they can keep using the same ORM library.

Describe why you would like this feature to be added to Sequelize

We've had a customer run in production with the old DuckDB Node library for more than a year now. I will contribute a rewrite based on the modern DuckDB Node Neo.

Is this feature dialect-specific?

• No. This feature is relevant to Sequelize as a whole.
• Yes. This feature only applies to the following dialect(s): DuckDB

Would you be willing to resolve this issue by submitting a Pull Request?

Very much so! The new dialect is written and passes all the tests. I'll be sending the companion pull request shortly.

• Yes, I have the time and I know how to start.
• Yes, I have the time but I will need guidance.
• No, I don't have the time, but my company or I are supporting Sequelize through donations on OpenCollective.
• No, I don't have the time, and I understand that I will need to wait until someone from the community or maintainers is interested in implementing my feature.

Indicate your interest in the addition of this feature by adding the 👍 reaction. Comments such as "+1" will be removed.