# Enabling Upserts For VectorStore (Using Langchain Code Node)

**URL:** <https://community.n8n.io/t/enabling-upserts-for-vectorstore-using-langchain-code-node/47633>\
**Category:** English 🇬🇧\
**Tags:** langchain\
**Created:** [June 1, 2024, 9:49pm UTC](https://community.n8n.io/t/enabling-upserts-for-vectorstore-using-langchain-code-node/47633 "2024-06-01T21:49:00Z")\
**Posts on this page:** 1\
**Showing post:** 15

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**Author:** ![brauliodiasribeiro](https://dub1.discourse-cdn.com/n8n/user_avatar/community.n8n.io/brauliodiasribeiro/32/157323_2.png) [@brauliodiasribeiro](https://community.n8n.io/u/brauliodiasribeiro)\
**Post date:** [November 11, 2024, 10:52am UTC](https://community.n8n.io/t/enabling-upserts-for-vectorstore-using-langchain-code-node/47633/15 "2024-11-11T10:52:26Z")

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Yes, sure…tks for your attention.  
For those who want to follow

> [@RAG with Postgres](http://community.n8n.io/t/rag-with-postgres/61423):
>
> Hii guys… I need to solve a problem about inserting into a database. I loaded a RAG model with supabase. I’m trying to switch the supabase node to postgres node, but I don’t know how to execute a function on the postgres node. Maybe you can show me a way. Supabase Delete metadata-\>\>file\_id=like.{{ $json.file\_id }} Insert match\_documents Read match\_documents Postgres Delete DELETE FROM documents WHERE metadata-\>\>‘file\_id’ ILIKE ‘%’ || ‘{{ $json.file\_id }}’ || ‘%’; Insert I left t…

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_[View the full topic](https://community.n8n.io/t/enabling-upserts-for-vectorstore-using-langchain-code-node/47633)._