Blog: You Don't Need a Vector Database, Postgres Already Has pgvector (series part 3)#8061
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…rt 3) Part 3 of the postgres-features series. Covers what embeddings and cosine similarity are, pgvector in raw SQL, and the typed version via @prisma-next/extension-pgvector, with a validated end-to-end demo on a temporary Prisma Postgres database from npx create-db (every command and output comes from a real run against the published 0.14.0 packages). Includes two interactive MDX components (draggable vector-space demo and a 6-step code/terminal runner), a comparison table, FAQ accordions for GEO, an Eclipse-style hero/meta cover, and links the bloom post forward to complete the series chain. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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WalkthroughA new pgvector blog post explains typed vector search with Prisma Next and adds interactive vector-space and terminal demos. Global styles support the visualization, and the preceding bloom-index post now links to this article. ChangesArticle foundation and typed runtime
Interactive demonstrations
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nurul3101
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Jul 17, 2026
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The pgvector post (#8061) merged to main as postgres-features part 3. This post becomes part 4: bloom keeps main's next pointer (pgvector), pgvector gains next (this post), and this post's frontmatter and series references update to fourth/prev-pgvector.
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What
New post for the
postgres-featuresseries (part 3, after Redis pub/sub and the bloom index): semantic search in Postgres with pgvector, and the type-safe version via@prisma-next/extension-pgvector.apps/blog/content/blog/you-dont-need-a-vector-database-postgres-already-has-pgvector/— post + two interactive MDX components (VectorSpaceDemo: draggable cosine-similarity plane;PgvectorDemoRunner: 6-step code/terminal walkthrough)apps/blog/public/<slug>/imgs/— hero.svg + meta.png (Eclipse house style, fonts embedded)global.css—.vector-demostyles (the runner reuses the existing.runnerstyles)next:to complete the series chainValidation
@prisma-next/*@0.14.0packages and a freshnpx create-db@latestPrisma Postgres database; every command/output in the post is from a real runtscerrors;cosineDistance→<=>rendering confirmed from extension sourcepnpm types:checkpasses; rendered page verified at/blog/<slug>(demos, FAQ accordions, og:image all present); no newlint:linkserrorsDraft until final read-through.
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