Redis · Command
PFMERGE
PFMERGE combines one or more HyperLogLogs into a destination key. It produces an approximate count of unique items across the merged data.
Last updated
- Since
- 2.8.9
Syntax
PFMERGE destkey [sourcekey [sourcekey ...]]In-depth API docs are only for subscribers: parameters, examples, common mistakes and interview practice.
SubscribeRelated
PFADDPFCOUNTPFDEBUGPFSELFTEST