Hi, Author here.

I have to admit, I haven't done any benchmarking against the existing FDWs for Clickhouse. But I actually wrote the Go FDW 2 years ago(around Dec 2018). ;)

There weren't any Clickhouse FDW available at that time and I probably would've tried them as well.

Now I just got around to write the blog post and convincing the team to release the code.

Though I have a suspicion that the percona FDW might win in the benchmarks as they won't have to pay the penalties when crossing the Go land to C land.[1]

1: https://www.cockroachlabs.com/blog/the-cost-and-complexity-o...