Is there any work on a successor to SQL (just the language, maybe as an optional frontend)? I am not a fan of SQL, it works great for simple queries, but fails

Is there any work on a successor to SQL (just the language, maybe as an optional frontend)? I am not a fan of SQL, it works great for simple queries, but fails (in my opinion) for more complicated ones. They get way to complicated and hard to understand for something that would be easy in other languages. This is not a critique of relational databases, only the language.