is there a tutorial to do the sql indexing in llamaindex.ts?

Is it possible to use llama index using my own LLM model?

Hey could someone suggest the best PDF loader (which is free) that can read tables as well as chunks it well for my rag? thanks in advance

I would like to use llama index between 2 documents (which are 2 csv files) i used the llama hub CSV Loader and worked great it loaded it into 2 documents. But im kinda stuck on how do i do I write my build my query engines and indexing them and then later try to give out an sql statement for my response using these 2 tables.