SADD
SADD key member [member ...]
Add the specified members to the set stored at key
. Specified members that are already a member of this set are ignored. If key
does not exist, a new set is created before adding the specified members.
An error is returned when the value stored at key
is not a set.
Return value
Integer reply: the number of elements that were added to the set, not including all the elements already present into the set.
History
-
>= 2.4
: Accepts multiplemember
arguments. Redis versions before 2.4 are only able to add a single member per call.
Examples
redis>
SADD myset "Hello"
(integer) 1
redis>
SADD myset "World"
(integer) 1
redis>
SADD myset "World"
(integer) 0
redis>
SMEMBERS myset
1) "Hello" 2) "World"
© 2009–2020 Salvatore Sanfilippo
Licensed under the Creative Commons Attribution-ShareAlike License 4.0.
https://redis.io/commands/sadd