Hello,

I'm using PGVectorStore from llamaindex/postgres version 0.0.65. I noticed that the external_id column in the vector store table is always filled with an empty string.

From my perspective, this empty string is hard-coded in the getDataToInsert method of the PGVectorStore class. See https://github.com/run-llama/LlamaIndexTS/blob/main/packages/providers/storage/postgres/src/PGVectorStore.ts#L316.

I would have expected the column to contain the ID of the document in the document store from which the node was derived. This would allow me to identify the vectors belonging to a document.

To implement this identification at present, I would have to store the ID of the document in the document store in the node's metadata.

Questions

Is writing the external_id to the vector store planned for a future version?
Is there another way to identify vectors belonging to a document besides using metadata?

regards Christian