mirror of
http://github.com/valkey-io/valkey
synced 2024-11-22 09:17:20 +00:00
74 lines
4.3 KiB
HTML
74 lines
4.3 KiB
HTML
|
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">
|
|
<html>
|
|
<head>
|
|
<link type="text/css" rel="stylesheet" href="style.css" />
|
|
</head>
|
|
<body>
|
|
<div id="page">
|
|
|
|
<div id='header'>
|
|
<a href="index.html">
|
|
<img style="border:none" alt="Redis Documentation" src="redis.png">
|
|
</a>
|
|
</div>
|
|
|
|
<div id="pagecontent">
|
|
<div class="index">
|
|
<!-- This is a (PRE) block. Make sure it's left aligned or your toc title will be off. -->
|
|
<b>ZrangebyscoreCommand: Contents</b><br> <a href="#ZRANGEBYSCORE _key_ _min_ _max_ `[`LIMIT _offset_ _count_`]` (Redis >">ZRANGEBYSCORE _key_ _min_ _max_ `[`LIMIT _offset_ _count_`]` (Redis ></a><br> <a href="#ZRANGEBYSCORE _key_ _min_ _max_ `[`LIMIT _offset_ _count_`]` `[`WITHSCORES`]` (Redis >">ZRANGEBYSCORE _key_ _min_ _max_ `[`LIMIT _offset_ _count_`]` `[`WITHSCORES`]` (Redis ></a><br> <a href="#Exclusive intervals and infinity">Exclusive intervals and infinity</a><br> <a href="#Return value">Return value</a><br> <a href="#Examples">Examples</a>
|
|
</div>
|
|
|
|
<h1 class="wikiname">ZrangebyscoreCommand</h1>
|
|
|
|
<div class="summary">
|
|
|
|
</div>
|
|
|
|
<div class="narrow">
|
|
#sidebar <a href="SortedSetCommandsSidebar.html">SortedSetCommandsSidebar</a><h1><a name="ZRANGEBYSCORE _key_ _min_ _max_ `[`LIMIT _offset_ _count_`]` (Redis >">ZRANGEBYSCORE _key_ _min_ _max_ `[`LIMIT _offset_ _count_`]` (Redis ></a></h1> 1.1) =
|
|
<h1><a name="ZRANGEBYSCORE _key_ _min_ _max_ `[`LIMIT _offset_ _count_`]` `[`WITHSCORES`]` (Redis >">ZRANGEBYSCORE _key_ _min_ _max_ `[`LIMIT _offset_ _count_`]` `[`WITHSCORES`]` (Redis ></a></h1> 1.3.4) =
|
|
<i>Time complexity: O(log(N))+O(M) with N being the number of elements in the sorted set and M the number of elements returned by the command, so if M is constant (for instance you always ask for the first ten elements with LIMIT) you can consider it O(log(N))</i><blockquote>Return the all the elements in the sorted set at key with a score between_min_ and <i>max</i> (including elements with score equal to min or max).</blockquote>
|
|
<blockquote>The elements having the same score are returned sorted lexicographically asASCII strings (this follows from a property of Redis sorted sets and does notinvolve further computation).</blockquote>
|
|
<blockquote>Using the optional LIMIT it's possible to get only a range of the matchingelements in an SQL-alike way. Note that if <i>offset</i> is large the commandsneeds to traverse the list for <i>offset</i> elements and this adds up to theO(M) figure.</blockquote><h2><a name="Exclusive intervals and infinity">Exclusive intervals and infinity</a></h2>
|
|
<i>min</i> and <i>max</i> can be -inf and +inf, so that you are not required to know what's the greatest or smallest element in order to take, for instance, elements "up to a given value".<br/><br/>Also while the interval is for default closed (inclusive) it's possible to specify open intervals prefixing the score with a "(" character, so for instance:
|
|
<pre class="codeblock python" name="code">
|
|
ZRANGEBYSCORE zset (1.3 5
|
|
</pre>
|
|
Will return all the values with score <b>> 1.3 and <= 5</b>, while for instance:
|
|
<pre class="codeblock python python" name="code">
|
|
ZRANGEBYSCORE zset (5 (10
|
|
</pre>
|
|
Will return all the values with score <b>> 5 and < 10</b> (5 and 10 excluded).
|
|
<h2><a name="Return value">Return value</a></h2><a href="ReplyTypes.html">Multi bulk reply</a>, specifically a list of elements in the specified score range.
|
|
<h2><a name="Examples">Examples</a></h2>
|
|
<pre class="codeblock python python python" name="code">
|
|
redis> zadd zset 1 foo
|
|
(integer) 1
|
|
redis> zadd zset 2 bar
|
|
(integer) 1
|
|
redis> zadd zset 3 biz
|
|
(integer) 1
|
|
redis> zadd zset 4 foz
|
|
(integer) 1
|
|
redis> zrangebyscore zset -inf +inf
|
|
1. "foo"
|
|
2. "bar"
|
|
3. "biz"
|
|
4. "foz"
|
|
redis> zrangebyscore zset 1 2
|
|
1. "foo"
|
|
2. "bar"
|
|
redis> zrangebyscore zset (1 2
|
|
1. "bar"
|
|
redis> zrangebyscore zset (1 (2
|
|
(empty list or set)
|
|
</pre>
|
|
</div>
|
|
|
|
</div>
|
|
</div>
|
|
</body>
|
|
</html>
|
|
|