I suspect that although any given query that needs a join is rare, there is a lo...

yorwba on Feb 16, 2019 | parent | context | favorite | on: Why Google needed to build a graph serving system

I suspect that although any given query that needs a join is rare, there is a long tail of many different such queries. Just having more than one predicate is enough, e.g. "weather in <city> during <event>" or any of the queries in footnote 2 of the article.