On Thu, Apr 9, 2020 at 5:25 PM Peter Geoghegan <p...@bowt.ie> wrote: > Was this a low cardinality index in the way I describe? If it was, > then we can hope (and maybe even verify) that the Postgres 12 work > noticeably ameliorates the problem.
What I really meant was an index where hundreds or even thousands of rows for each distinct timestamp value are expected. Not an index where almost every row has a distinct timestamp value. Both timestamp index patterns are common, obviously. -- Peter Geoghegan
