# ZDIFFSTORE

```json metadata
{
  "schema_version": 2,
  "title": "ZDIFFSTORE",
  "description": "Stores the difference of multiple sorted sets in a key.",
  "categories": ["docs","develop","stack","oss","rs","rc","oss","kubernetes","clients"],
  "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"}],
  "syntax_fmt": "ZDIFFSTORE destination numkeys key [key ...]",
  "complexity": "O(L + (N-K)log(N)) worst case where L is the total number of elements in all the sets, N is the size of the first set, and K is the size of the result set.",
  "group": "sorted-set",
  "command_flags": ["write","denyoom","movablekeys"],
  "acl_categories": ["@write","@sortedset","@slow"],
  "since": "6.2.0",
  "arity": -4,
  "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"}}],
  "tableOfContents": {"sections":[{"id":"required-arguments","title":"Required arguments"},{"id":"examples","title":"Examples"},{"id":"redis-software-and-redis-cloud-compatibility","title":"Redis Software and Redis Cloud compatibility"},{"id":"return-information","title":"Return information"}]}

,
  "codeExamples": []
}
```

> [!NOTE]
> This command's behavior varies in clustered Redis environments. See the [multi-key operations](https://redis.io/docs/latest/develop/using-commands/multi-key-operations) page for more information.


Computes the difference between the first and all successive input sorted sets
and stores the result in `destination`. The total number of input keys is
specified by `numkeys`.

Keys that do not exist are considered to be empty sets.

If `destination` already exists, it is overwritten.

## Required arguments

<details open><summary><code>destination</code></summary>

The key to store the resulting sorted set in.

</details>

<details open><summary><code>numkeys</code></summary>

The number of keys that follow.

</details>

<details open><summary><code>key [key ...]</code></summary>

One or more sorted-set keys. The difference is the members of the first set that are not present in any of the subsequent sets.

</details>

## Examples


redis> ZADD zset1 1 "one"
(integer) 1
redis> ZADD zset1 2 "two"
(integer) 1
redis> ZADD zset1 3 "three"
(integer) 1
redis> ZADD zset2 1 "one"
(integer) 1
redis> ZADD zset2 2 "two"
(integer) 1
redis> ZDIFFSTORE out 2 zset1 zset2
(integer) 1
redis> ZRANGE out 0 -1 WITHSCORES
1) "three"
2) "3"


## 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

**RESP2:**

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

**RESP3:**

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