text: which enables queries on massive, semi-structured data without operational burden. With Rockset, ingested data is queryable within one second and analytical queries against that data typically execute in milliseconds. Rockset is compute optimized, making it suitable for serving high concurrency applications in the sub-100TB range (or larger than 100s of TBs with rollups).This notebook demonstrates how to use Rockset as a document loader in langchain. To get started, make sure you have a Rockset account and an API key available.Setting up the environmentâ€‹Go to the Rockset console and get an API key. Find your API region from the API reference. For the purpose of this notebook, we will assume you're using Rockset from Oregon(us-west-2).Set your the environment variable ROCKSET_API_KEY.Install the Rockset python client, which will be used by langchain to interact with the Rockset database.$ pip3 install rocksetLoading DocumentsThe Rockset integration with LangChain allows you to load documents from Rockset collections with SQL queries. In order to do this you must construct a RocksetLoader object. Here is an example snippet that initializes a RocksetLoader.from langchain.document_loaders import RocksetLoaderfrom rockset import RocksetClient, Regions, modelsloader = RocksetLoader(    RocksetClient(Regions.usw2a1, "<api key>"),    models.QueryRequestSql(query="SELECT * FROM langchain_demo LIMIT 3"),  # SQL query    ["text"],  # content columns    metadata_keys=["id", "date"],  # metadata columns)Here, you can see that the following query is run:SELECT * FROM langchain_demo LIMIT 3The text column in the collection is used as the page content, and the record's id and date columns are used as metadata (if you do not pass anything into metadata_keys, the whole Rockset document will