Absolutely, but can it complete column names in your database table? Or Redis commands? Or long hard-to-spell English words and sentences? :) Vim will autocomp

Absolutely, but can it complete column names in your database table? Or Redis commands? Or long hard-to-spell English words and sentences? :) Vim will autocomplete based on whatever you have in the buffers. So when writing sql I sometimes open up a new buffer and paste the output of desc table.