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SINTER

Last updated 
SINTER key [key ...]
Group
Set
Complexity
O(N*M) worst case, where N is the size of the smallest set and M is the number of sets
Arity
-2 (at least 2 words, counting the command name)
Flags
read-only
Keys
first 1, last final argument, step 1
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SINTER returns the intersection of the given sets: the members that are in all of them. A missing key counts as an empty set, so if any key is missing the result is empty. To count the intersection without returning it, use SINTERCARD; to store it, use SINTERSTORE.

Return value

Section titled “Return value”
Case RESP2 RESP3
Success Array of bulk strings (empty if there is no common member) Set of bulk strings

SINTER replies with a WRONGTYPE error if any of the keys holds a value that is not a set, even when another key is missing.

Examples

Section titled “Examples”
127.0.0.1:6379> SADD a "x" "y" "z"
(integer) 3
127.0.0.1:6379> SADD b "y" "z" "w"
(integer) 3
127.0.0.1:6379> SINTER a b
1) "y"
2) "z"
127.0.0.1:6379> SINTER a nosuchkey
(empty array)

Compatibility

Section titled “Compatibility”

Same as Redis 7.4 and Valkey 8.

See also

Section titled “See also”

SINTERSTORE, SINTERCARD, SUNION, SDIFF, ZINTER