TimescaleDB (psql extension) has these, specific to time-series however. https://docs.timescale.com/timescaledb/latest/how-to-guides/continuous-aggregates/ htt

TimescaleDB (psql extension) has these, specific to time-series however. https://docs.timescale.com/timescaledb/latest/how-to-guides/continuous-aggregates/ https://docs.timescale.com/timescaledb/latest/how-to-guides/...