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SINTERSTORE

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SINTERSTORE destination 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
-3 (at least 3 words, counting the command name)
Flags
write
Keys
first 1, last final argument, step 1
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SINTERSTORE computes the same intersection as SINTER and stores it as a set at destination, replacing whatever destination held before (of any type, and without its time to live). If the result is empty, destination is deleted. The source sets are read and the result written as one atomic step, and destination can also be one of the source keys.

Return value

Section titled “Return value”
Case RESP2 RESP3
Success Integer: the number of members in the stored set Same

SINTERSTORE replies with a WRONGTYPE error if any source key holds a value that is not a set. destination is not changed in that case.

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> SINTERSTORE common a b
(integer) 2
127.0.0.1:6379> SMEMBERS common
1) "y"
2) "z"

Compatibility

Section titled “Compatibility”

Same as Redis 7.4 and Valkey 8.

See also

Section titled “See also”

SINTER, SUNIONSTORE, SDIFFSTORE, ZINTERSTORE