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There will be any number of reasons to favor PostgreSQL over the DolphinDB and vice versa. I have owned various on linux, aix, windows, sco-unix, vax from pick, rms, isams, 4gls dbs, ingres, informix, sybase, mssql, db2, oracle, solid, postgres, mysql to mongo, influx, and redis. I hate them all. I found mysql very slow, much slower than postgresql on equivalent datasets/queries. I had done evaluations before choosing an open-source db for a particular project. And that really is the crux of the thing - comparing benchmarks is usually meaningless, some don't scale as well, some suit a different kind of application, some need to be distributed, some not, it really is on a case by case basis, what is good in one case is not always the case. Perhaps stating the blindingly obvious for those getting very het up about evangelism... |