W3cubDocs

/Redis

ZUNION

ZUNION numkeys key [key ...] [WEIGHTS weight [weight ...]] [AGGREGATE SUM|MIN|MAX] [WITHSCORES]

This command is similar to ZUNIONSTORE, but instead of storing the resulting sorted set, it is returned to the client.

For a description of the WEIGHTS and AGGREGATE options, see ZUNIONSTORE.

Return value

Array reply: the result of union (optionally with their scores, in case the WITHSCORES option is given).

Examples

redis> ZADD zset1 1 "one" (integer) 1 redis> ZADD zset1 2 "two" (integer) 1 redis> ZADD zset2 1 "one" (integer) 1 redis> ZADD zset2 2 "two" (integer) 1 redis> ZADD zset2 3 "three" (integer) 1 redis> ZUNION 2 zset1 zset2 1) "one" 2) "three" 3) "two" redis> ZUNION 2 zset1 zset2 WITHSCORES 1) "one" 2) "2" 3) "three" 4) "3" 5) "two" 6) "4"

© 2009–2020 Salvatore Sanfilippo
Licensed under the Creative Commons Attribution-ShareAlike License 4.0.
https://redis.io/commands/zunion