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46 lines
2.1 KiB
HTML
46 lines
2.1 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">
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<link type="text/css" rel="stylesheet" href="style.css" />
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<body>
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<div id="page">
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<a href="index.html">
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<img style="border:none" alt="Redis Documentation" src="redis.png">
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</a>
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<!-- This is a (PRE) block. Make sure it's left aligned or your toc title will be off. -->
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<b>HincrbyCommand: Contents</b><br> <a href="#HINCRBY _key_ _field_ _value_ (Redis >">HINCRBY _key_ _field_ _value_ (Redis ></a><br> <a href="#Examples">Examples</a><br> <a href="#Return value">Return value</a>
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<h1 class="wikiname">HincrbyCommand</h1>
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<h1><a name="HINCRBY _key_ _field_ _value_ (Redis >">HINCRBY _key_ _field_ _value_ (Redis ></a></h1> 1.3.10)=
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<i>Time complexity: O(1)</i><blockquote>Increment the number stored at <i>field</i> in the hash at <i>key</i> by <i>value</i>. If <i>key</i> does not exist, a new key holding a hash is created. If <i>field</i> does not exist or holds a string, the value is set to 0 before applying the operation.</blockquote>
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<blockquote>The range of values supported by HINCRBY is limited to 64 bit signed integers.</blockquote><h2><a name="Examples">Examples</a></h2>
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Since the <i>value</i> argument is signed you can use this command to perform both increments and decrements:<br/><br/><pre class="codeblock python" name="code">
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HINCRBY key field 1 (increment by one)
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HINCRBY key field -1 (decrement by one, just like the DECR command)
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HINCRBY key field -10 (decrement by 10)
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</pre>
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<h2><a name="Return value">Return value</a></h2><a href="ReplyTypes.html">Integer reply</a> The new value at <i>field</i> after the increment operation.
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