SQL is the most powerful query language ever invented and widely implemented over relation databases IMO (qualified heavily for lurking RDF zealots). Every time you see someone start to invent their own query language, I almost always mark is as folly (similar to when people invent their own configuration languages). Prometheus and GraphQL stand out as recent examples.
DBs like Kafka who recognize this and instead offer SQL on top of their things take the right approach IMO KSQL.
DBs like Kafka who recognize this and instead offer SQL on top of their things take the right approach IMO KSQL.