Tag: tag

pgvector dimension mismatch casting error ALTER TABLE fix guide 2026

pgvector Gotchas: Dimension Mismatch, Casting Errors, and ALTER TABLE Solved [2026]

Posted on by Sanjeeva Kumar

Last Updated: May 2026 Tested On: PostgreSQL 16.1, pgvector 0.8.1 / 0.8.2 The most common pgvector dimension mismatch error lands within the first hour of setup. After that come casting failures, ALTER TABLE dead-ends, and indexes that exist but never get used. Some are obvious — wrong dimension count, missing cast. Some are subtle — Read more about pgvector Gotchas: Dimension Mismatch, Casting Errors, and ALTER TABLE Solved [2026][…]

pgvector vs Pinecone vs Weaviate comparison chart 2026

pgvector vs Pinecone vs Weaviate: A Production DBA’s Verdict [2026]

Posted on by Sanjeeva Kumar

Last Updated: May 2026 Context: pgvector 0.8.1, Pinecone serverless, Weaviate 1.25+ The pgvector vs Pinecone vs Weaviate debate lands on my desk every time a new AI project starts, the first debate that erupts is not about the embedding model or the LLM. It’s this: “Should we just use pgvector or do we need a Read more about pgvector vs Pinecone vs Weaviate: A Production DBA’s Verdict [2026][…]

pgvector release notes updates 2026 version compatibility chart

pgvector Release Notes & Updates [2025–2026]: What Changed and What It Means for Your PostgreSQL Stack

Posted on by Sanjeeva Kumar

Last Updated: May 2026 | Tested On: PostgreSQL 16.1, pgvector 0.8.1 | Author: Sanjeeva Kumar, Oracle ACE Associate If you landed here searching “pgvector updates 2026” — you’re not looking for a setup tutorial. You already have pgvector running, or you’re evaluating it, and you want to know: what changed, what broke, and is it Read more about pgvector Release Notes & Updates [2025–2026]: What Changed and What It Means for Your PostgreSQL Stack[…]

Architecture comparison showing complex specialized vector database setup versus simple PostgreSQL pgvector unified solution for AI workloads

Do You Actually Need a Vector Database? Probably Not

Posted on by Sanjeeva Kumar

Last Updated: December 2025 | By Sanjeeva Kumar | 20+ Years in Database Systems The Plot Twist Nobody Saw Coming Two weeks ago, PostgreSQL’s pgvector extension released version 0.8.0. Within days, the entire vector database market collectively held its breath. Why? Because that “old guard” relational database just made billion-dollar vector database startups look like Read more about Do You Actually Need a Vector Database? Probably Not[…]