SDIFFSTORE · Valkey

SDIFFSTORE

Stores the difference of multiple sets in a key.

Usage

SDIFFSTORE destination key [key…]

Description

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

If destination already exists, it is overwritten.

Reply

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

Complexity

O(N) where N is the total number of elements in all given sets.

ACL Categories

@set @slow @write

Examples

127.0.0.1:6379> SADD key1 "a"
(integer) 1
127.0.0.1:6379> SADD key1 "b"
(integer) 1
127.0.0.1:6379> SADD key1 "c"
(integer) 1
127.0.0.1:6379> SADD key2 "c"
(integer) 1
127.0.0.1:6379> SADD key2 "d"
(integer) 1
127.0.0.1:6379> SADD key2 "e"
(integer) 1
127.0.0.1:6379> SDIFFSTORE key key1 key2
(integer) 2
127.0.0.1:6379> SMEMBERS key
1) "a"
2) "b"

History

See also

SADD, SCARD, SDIFF, SINTER, SINTERCARD, SINTERSTORE, SISMEMBER, SMEMBERS, SMISMEMBER, SMOVE, SPOP, SRANDMEMBER, SREM, SSCAN, SUNION, SUNIONSTORE.