---
acl_categories:
- '@read'
- '@set'
- '@slow'
arguments:
- display_text: key
  key_spec_index: 0
  multiple: true
  name: key
  type: key
arity: -2
categories:
- docs
- develop
- stack
- oss
- rs
- rc
- oss
- kubernetes
- clients
command_flags:
- readonly
complexity: O(N*M) worst case where N is the cardinality of the smallest set and M
  is the number of sets.
description: Returns the intersect of multiple sets.
group: set
hidden: false
hints:
- nondeterministic_output_order
key_specs:
- RO: true
  access: true
  begin_search:
    spec:
      index: 1
    type: index
  find_keys:
    spec:
      keystep: 1
      lastkey: -1
      limit: 0
    type: range
linkTitle: SINTER
railroad_diagram: /images/railroad/sinter.svg
since: 1.0.0
summary: Returns the intersect of multiple sets.
syntax_fmt: SINTER key [key ...]
title: SINTER
---
{{< 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 >}}


Returns the members of the set resulting from the intersection of all the given
sets.

For example:

```
key1 = {a,b,c,d}
key2 = {c}
key3 = {a,c,e}
SINTER key1 key2 key3 = {c}
```

Keys that do not exist are considered to be empty sets.
With one of the keys being an empty set, the resulting set is also empty (since
set intersection with an empty set always results in an empty set).

## Examples

{{% redis-cli %}}
SADD key1 "a"
SADD key1 "b"
SADD key1 "c"
SADD key2 "c"
SADD key2 "d"
SADD key2 "e"
SINTER key1 key2
{{% /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="sinter-return-info" 
    tab1="RESP2" 
    tab2="RESP3" >}}

[Array reply](../../develop/reference/protocol-spec#arrays): an array with the members of the resulting set.

-tab-sep-

[Set reply](../../develop/reference/protocol-spec#sets): a set with the members of the resulting set.

{{< /multitabs >}}