ZUNIONSTORE - Upstash Documentation

Arguments

destinationbodystrrequired

The key to store the resulting set in.

keysbodyList[str]required

The keys of the sets to compare.

weightsbodyList[float]default: None

The weights to apply to the sets.

aggregatebody"SUM" | "MIN" | "MAX"default: sum

The aggregation function to apply to the sets.

withscoresbodybooldefault: false

Whether to include scores in the result.

Response

required

The number of elements in the resulting set.

Simple

redis.zadd("key1", {"a": 1, "b": 2, "c": 3})redis.zadd("key2", {"c": 3, "d": 4, "e": 5})result = redis.zunionstore(["key1", "key2"])assert result == 5

Aggregation

redis.zadd("key1", {"a": 1, "b": 2, "c": 3})redis.zadd("key2", {"a": 3, "b": 4, "c": 5})result = redis.zunionstore(["key1", "key2"], withscores=True, aggregate="SUM")assert result == [("a", 4), ("b", 6), ("c", 8)]

Weights

redis.zadd("key1", {"a": 1})redis.zadd("key2", {"a": 1})result = redis.zunionstore(["key1", "key2"],                      withscores=True,                      aggregate="SUM",                      weights=[2, 3])assert result == [("a", 5)]