Redis - Sorted Set Zinterstore Command

Redis ZINTERSTORE command computes the intersection of numkeys sorted sets given by the specified keys, and stores the result in the destination. It is mandatory to provide the number of input keys (numkeys) before passing the input keys and the other (optional) arguments.

Return Value

Integer reply, the number of elements in the resulting sorted set at the destination.

Syntax

Following is the basic syntax of Redis ZINTERSTORE command.

redis 127.0.0.1:6379> ZINTERSTORE KEY INCREMENT MEMBER

Example

redis 127.0.0.1:6379> ZADD myset 1 "hello" 
(integer) 1 
redis 127.0.0.1:6379> ZADD myset 2 "world" 
(integer) 1 
redis 127.0.0.1:6379> ZADD myset2 1 "hello" 
(integer) 1 
redis 127.0.0.1:6379> ZADD myset2 2 "world" 
(integer) 1 
redis 127.0.0.1:6379> ZADD myset2 3 "foo" 
(integer) 1 
redis 127.0.0.1:6379> ZINTERSTORE out 2 myset1 myset2 WEIGHTS 2 3" 
(integer) 3 
redis 127.0.0.1:6379> ZRANGE out 0 -1 WITHSCORES 
1) "hello" 
2) "5" 
3) "world" 
4) "10" 

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