---
acl_categories:
- '@write'
- '@sortedset'
- '@slow'
arguments:
- display_text: destination
  key_spec_index: 0
  name: destination
  type: key
- display_text: numkeys
  name: numkeys
  type: integer
- display_text: key
  key_spec_index: 1
  multiple: true
  name: key
  type: key
- display_text: weight
  multiple: true
  name: weight
  optional: true
  token: WEIGHTS
  type: integer
- arguments:
  - display_text: sum
    name: sum
    token: SUM
    type: pure-token
  - display_text: min
    name: min
    token: MIN
    type: pure-token
  - display_text: max
    name: max
    token: MAX
    type: pure-token
  name: aggregate
  optional: true
  token: AGGREGATE
  type: oneof
arity: -4
categories:
- docs
- develop
- stack
- oss
- rs
- rc
- oss
- kubernetes
- clients
command_flags:
- write
- denyoom
- movablekeys
complexity: O(N*K)+O(M*log(M)) worst case with N being the smallest input sorted set,
  K being the number of input sorted sets and M being the number of elements in the
  resulting sorted set.
description: Stores the intersect of multiple sorted sets in a key.
group: sorted-set
hidden: false
key_specs:
- OW: true
  begin_search:
    spec:
      index: 1
    type: index
  find_keys:
    spec:
      keystep: 1
      lastkey: 0
      limit: 0
    type: range
  update: true
- RO: true
  access: true
  begin_search:
    spec:
      index: 2
    type: index
  find_keys:
    spec:
      firstkey: 1
      keynumidx: 0
      keystep: 1
    type: keynum
linkTitle: ZINTERSTORE
railroad_diagram: /images/railroad/zinterstore.svg
since: 2.0.0
summary: Stores the intersect of multiple sorted sets in a key.
syntax_fmt: "ZINTERSTORE destination numkeys key [key ...] [WEIGHTS\_weight\n  [weight\
  \ ...]] [AGGREGATE\_<SUM | MIN | MAX>]"
title: ZINTERSTORE
---
{{< note >}}
This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
{{< /note >}}


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

By default, the resulting score of an element is the sum of its scores in the
sorted sets where it exists.
Because intersection requires an element to be a member of every given sorted
set, this results in the score of every element in the resulting sorted set to
be equal to the number of input sorted sets.

For a description of the `WEIGHTS` and `AGGREGATE` options, see [`ZUNIONSTORE`]({{< relref "/commands/zunionstore" >}}).

If `destination` already exists, it is overwritten.

## Examples

{{% redis-cli %}}
ZADD zset1 1 "one"
ZADD zset1 2 "two"
ZADD zset2 1 "one"
ZADD zset2 2 "two"
ZADD zset2 3 "three"
ZINTERSTORE out 2 zset1 zset2 WEIGHTS 2 3
ZRANGE out 0 -1 WITHSCORES
{{% /redis-cli %}}

## Redis Software and Redis Cloud compatibility

| Redis<br />Software | Redis<br />Cloud | <span style="min-width: 9em; display: table-cell">Notes</span> |
|:----------------------|:-----------------|:------|
| <span title="Supported">&#x2705; Standard</span><br /><span title="Supported"><nobr>&#x2705; Active-Active</nobr></span> | <span title="Supported">&#x2705; Standard</span><br /><span title="Supported"><nobr>&#x2705; Active-Active</nobr></span> |  |

## Return information

{{< multitabs id="zinterstore-return-info" 
    tab1="RESP2" 
    tab2="RESP3" >}}

[Integer reply](../../develop/reference/protocol-spec#integers): the number of members in the resulting sorted set at the _destination_.

-tab-sep-

[Integer reply](../../develop/reference/protocol-spec#integers): the number of members in the resulting sorted set at the _destination_.

{{< /multitabs >}}