Anyone know how I can use langchain to query a locally stored indexed database that I created using llamaindex?

Does this mean I can't use llama index's query function without langchain?

Thanks for the response. I wonder if there are any easier ways to extract insights from large amounts of stored time-series data using NLP. Seems like there should be a way since text-to-SQL queries seem to be feasible now

Does llamaindex do a better job indexing and querying json files instead of pdfs?

This loader doesn't read the columns properly using chatgpt3.5 turbo:

I think the embeddings are way too liberal in their interpretation of the actual text