SingleStore, formerly MemSQL, is a distributed SQL database that handles transactional and analytical workloads in one engine, and in recent years it has pushed hard on vector search, pitching itself as a place to keep embeddings next to operational data instead of running a separate vector database. That pitch is why it belongs on an AI course review site. Whether one engine or several is the right architecture for a RAG system is a genuine design question, and understanding how SingleStore works helps you answer it. The training is free. Sign up for an account and you get self-paced courses on schema design, data ingestion, query optimisation and administration, with videos, hands-on labs and knowledge checks.
The schema design material is the highlight. Picking shard keys, choosing between rowstore and columnstore, and understanding reference tables is where people new to distributed SQL make their expensive mistakes, and SingleStore explains it clearly. The pipelines material, which covers ingesting from Kafka and S3, reflects how the product is actually used. Certification comes in two flavours, Certified Developer and Certified Helios DBA. The developer exam costs $100, runs online with a proctor, has 50 questions across architecture, design, ingest and development, and gives you 80 minutes.
The exam guides are published as PDFs, which I appreciate. At $100 it is fairly priced, but I have rarely seen it asked for in job ads, so it is proof for your current employer more than a door-opener. My main disappointment is that the vector and AI side barely appears in the core training. The marketing puts AI front and centre, and the learning path is still mostly about the database SingleStore has been for years. If you want to learn hybrid search or how to build RAG on SingleStore, you will be reading docs, blog posts and notebooks rather than following a course. The other gap is the standard vendor one.
Nothing here helps you decide when SingleStore is the wrong tool, whether that means Postgres with pgvector, ClickHouse for analytics, or a dedicated vector store. For a product whose whole pitch is consolidation, a frank look at the trade-offs would have made the training much more credible. My take: well made free training with good schema design content. Do it if SingleStore is on your shortlist, and fill the AI gap yourself.