VMM-Mtech

Hi again. I'm continuing with different test patterns. Now I updated ~30k rows from one year. It took about 20 seconds, and after it the refresh_continuous_aggregate (covering all history) took...

Hi, just a little update on what we've figured out. We browsed through the code more thoroughly and found some good comments there. For example [refresh.c](https://github.com/timescale/timescaledb/blob/1d504d5153e757207dc57441fa93a96a0b2a4957/tsl/src/continuous_aggs/refresh.c) mentioned how it merges...