ProvidersMorePGVectorOn this pagePGVectorThis page covers how to use the Postgres PGVector ecosystem within LangChain
It is broken into two parts: installation and setup, and then references to specific PGVector wrappers.Installation​Install the Python package with pip install pgvectorSetup​The first step is to create a database with the pgvector extension installed.Follow the steps at PGVector Installation Steps to install the database and the extension. The docker image is the easiest way to get started.Wrappers​VectorStore​There exists a wrapper around Postgres vector databases, allowing you to use it as a vectorstore,
whether for semantic search or example selection.To import this vectorstore:from langchain.vectorstores.pgvector import PGVectorUsage​For a more detailed walkthrough of the PGVector Wrapper, see this notebookPreviousPostgres EmbeddingNextPineconeInstallationSetupWrappersVectorStoreUsage