ZCOUNT

Returns the number of elements in the sorted set at key with a score between min and max.

The min and max arguments have the same semantic as described for [ZRANGEBYSCORE]({{< relref "/commands/zrangebyscore" >}}).

Note: the command has a complexity of just O(log(N)) because it uses elements ranks (see [ZRANK]({{< relref "/commands/zrank" >}})) to get an idea of the range. Because of this there is no need to do a work proportional to the size of the range.

Examples

{{% redis-cli %}} ZADD myzset 1 "one" ZADD myzset 2 "two" ZADD myzset 3 "three" ZCOUNT myzset -inf +inf ZCOUNT myzset (1 3 {{% /redis-cli %}}

Redis Software and Redis Cloud compatibility

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

Return information

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

Integer reply: the number of members in the specified score range.

-tab-sep-

Integer reply: the number of members in the specified score range.

{{< /multitabs >}}