Redis SADD Command

Redis Sets (Set)

The Redis SADD command adds one or more member elements to the set, and elements that already exist in the set will be ignored.

If the set key does not exist, a set is created that contains only the elements added.

If the key of the set is not a set type, an error is returned.

Note:In Redis2.4 Before the version, SADD only accepted a single member value.

Syntax

Basic Syntax of Redis SADD Command:

redis　127.0.0.1:6379>  SADD  KEY_NAME  VALUE1..VALUEN

Available Version

>= 1.0.0

Return Value

The number of new elements added to the set, excluding ignored elements.

Online Examples

redis　127.0.0.1:6379>  SADD  myset  "hello"
(integer)　1
redis　127.0.0.1:6379>  SADD  myset  "foo"
(integer)　1
redis　127.0.0.1:6379>  SADD  myset  "hello"
(integer) 0
redis　127.0.0.1:6379>  SMEMBERS  myset
1)  "hello"
2)  "foo"

Redis Sets (Set)