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| | 18 | <!-- This is a (PRE) block. Make sure it's left aligned or your toc title will be off. --> |
| | 19 | <b>IncrCommand: Contents</b><br> <a href="#INCR _key_">INCR _key_</a><br> <a href="#INCRBY _key_ _integer_">INCRBY _key_ _integer_</a><br> <a href="#DECR _key_ _integer_">DECR _key_ _integer_</a><br> <a href="#DECRBY _key_ _integer_">DECRBY _key_ _integer_</a><br> <a href="#Return value">Return value</a> |
| | 20 | </div> |
| | 21 | |
| | 22 | <h1 class="wikiname">IncrCommand</h1> |
| | 23 | |
| | 24 | <div class="summary"> |
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| | 26 | </div> |
| | 27 | |
| | 28 | <div class="narrow"> |
| | 29 | #sidebar <a href="StringCommandsSidebar.html">StringCommandsSidebar</a><h1><a name="INCR _key_">INCR _key_</a></h1> |
| | 30 | <h1><a name="INCRBY _key_ _integer_">INCRBY _key_ _integer_</a></h1> |
| | 31 | <h1><a name="DECR _key_ _integer_">DECR _key_ _integer_</a></h1> |
| | 32 | <h1><a name="DECRBY _key_ _integer_">DECRBY _key_ _integer_</a></h1> |
| | 33 | <i>Time complexity: O(1)</i><blockquote>Increment or decrement the number stored at <i>key</i> by one. If the key doesnot exist or contains a value of a wrong type, set the key to thevalue of "0" before to perform the increment or decrement operation.</blockquote> |
| | 34 | <blockquote>INCRBY and DECRBY work just like INCR and DECR but instead toincrement/decrement by 1 the increment/decrement is <i>integer</i>.</blockquote> |
| | 35 | <blockquote>INCR commands are limited to 64 bit signed integers.</blockquote> |
| | 36 | Note: this is actually a string operation, that is, in Redis there are not "integer" types. Simply the string stored at the key is parsed as a base 10 64 bit signed integer, incremented, and then converted back as a string.<h2><a name="Return value">Return value</a></h2><a href="ReplyTypes.html">Integer reply</a>, this commands will reply with the new value of <i>key</i> after the increment or decrement. |
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projects / redis.git / blame_incremental