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ZINTERSTORE

Syntax​

ZINTERSTORE destination key [key ...] [WEIGHTS weight [weight ...]] [AGGREGATE <SUM | MIN | MAX>] [WITHSCORES]

Module​

sortedset

Categories​

write slow sortedset

Description​

Computes the intersection of the sets in the keys, with weights, aggregate and scores. The result is stored in destination.

Options​

  • WEIGHTS - A list of floats that determine the weight of each sorted set. The scores of each member of a sort set are multiplied by the corresponding weight. If weights are not provided, the default weight is 1 for all sorted sets.
  • AGGREGATE - Determines the strategy used to compare the scores of members in the intersection. SUM will add the scores, MIN will choose the minimum score, and MAX will choose the maximum score.
  • WITHSCORES - Determines whether scores should be included in the resulting sorted set.

Examples​

Store the intersection between 2 sorted sets:

db, err := sugardb.NewSugarDB()
if err != nil {
  log.Fatal(err)
}
cardinality, err := vault.ZInterStore("destination", []string{"key1", "key2"}, db.ZInterStoreOptions{})

Store the intersection between 2 sorted sets with a sum of the weighted scores:

db, err := sugardb.NewSugarDB()
if err != nil {
  log.Fatal(err)
}
cardinality, err := vault.ZInterStore(
  "destination",
  []string{"key1", "key2"},
  db.ZInterStoreOptions{Weights: []float64{2, 4}, Aggregate: "SUM", WithScores: true},
)