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SUNIONSTORE

SUNIONSTORE destination key [key ...]

This command is equal to SUNION, but instead of returning the resulting set, it is stored in destination.

If destination already exists, it is overwritten.

Return value

Integer reply: the number of elements in the resulting set.

Examples

redis> SADD key1 "a" (integer) 1 redis> SADD key1 "b" (integer) 1 redis> SADD key1 "c" (integer) 1 redis> SADD key2 "c" (integer) 1 redis> SADD key2 "d" (integer) 1 redis> SADD key2 "e" (integer) 1 redis> SUNIONSTORE key key1 key2 (integer) 5 redis> SMEMBERS key 1) "a" 2) "c" 3) "b" 4) "e" 5) "d"

© 2009–2017 Salvatore Sanfilippo
Licensed under the Creative Commons Attribution-ShareAlike License 4.0.
https://redis.io/commands/sunionstore