notes:
https://github.com/zylon-ai/private-gpt/pull/1399/files https://docs.llamaindex.ai/en/stable/examples/index_structs/struct_indices/SQLIndexDemo/ https://medium.com/@reddyyashu20/nl2sql-with-llamaindex-querying-databases-using-natural-language-cdd4390cbcd8 https://arxiv.org/html/2401.02997v1