One example is OLAP databases, which often heavily exploit SIMD for query processing. You can also turn parsing into a SIMD problem, which is applicable to things like handling XML, JSON, and CSV. Simdjson comes to mind, or parabix for XML.
The parsing stuff I am aware of, but the query processing is a big blank for me to dig into.
The parsing stuff I am aware of, but the query processing is a big blank for me to dig into.