> Or put another way, is there any data storage format that couldn’t be queried by SQL?
Depends on how keen you are on pure SQL. For example, postgres and sqlite have json-extensions, but they also enhance the syntax for it. Simliar can be done for all other formats too, but this means you need to learn special syntax and be aware of the storage-format for every query. This is far off from a real universal language.
Depends on how keen you are on pure SQL. For example, postgres and sqlite have json-extensions, but they also enhance the syntax for it. Simliar can be done for all other formats too, but this means you need to learn special syntax and be aware of the storage-format for every query. This is far off from a real universal language.