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general_routines.html
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general_routines.html
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>general_routines: common_schema documentation</title>
<meta name="description" content="general_routines: common_schema" />
<meta name="keywords" content="general_routines: common_schema" />
<link rel="stylesheet" type="text/css" href="css/style.css" />
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<body>
<div id="main">
<div id="header">
<h1>common_schema</h1> <strong>2.2</strong> documentation
<div class="subtitle">DBA's framework for MySQL</div>
</div>
<div id="contentwrapper">
<div id="content">
<h2><a href="general_routines.html">general_routines</a></h2>
<h3>SYNOPSIS</h3>
<p>
General routines: general purpose tasks routines.
<ul>
<li><a href="crc64.html">crc64()</a>: Return a 64 bit CRC of given input, as unsigned big integer.</li>
<li><a href="query_checksum.html">query_checksum()</a>: Checksum the result set of a query.</li>
<li><a href="random_hash.html">random_hash()</a>: Return a 64 bit CRC of given input, as unsigned big integer.</li>
<li><a href="shorttime_to_seconds.html">shorttime_to_seconds()</a>: Return the number of seconds represented by the given short form.</li>
</ul>
</p>
<h3>EXAMPLES</h3>
<p>
Calculate 64 bit CRC for some text:
</p>
<blockquote><pre>mysql> SELECT common_schema.crc64('mysql') AS crc64;
+---------------------+
| crc64 |
+---------------------+
| 9350511318824990686 |
+---------------------+
</pre></blockquote>
<p>
Use <i>shorttime_to_seconds()</i> to parse '2h', making for 2 hours:
</p>
<blockquote><pre>mysql> SELECT shorttime_to_seconds('2h') as seconds;
+---------+
| seconds |
+---------+
| 7200 |
+---------+
</pre></blockquote>
<br/>
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<li><a title="Introduction" href="introduction.html">Introduction</a></li>
<li><a title="Documentation" href="documentation.html">Documentation</a></li>
<li><a title="Download" href="download.html">Download</a></li>
<li><a title="Install" href="install.html">Install</a></li>
<li><a title="Risks" href="risks.html">Risks</a></li>
</ul>
<h3>QUERY SCRIPT</h3>
<ul>
<li><a title="QueryScript" href="query_script.html">QueryScript</a></li>
<li><a title="Execution" href="query_script_execution.html">Execution</a></li>
<li><a title="Flow control" href="query_script_flow_control.html">Flow control</a></li>
<li><a title="Statements" href="query_script_statements.html">Statements</a></li>
<li><a title="Expressions" href="query_script_expressions.html">Expressions</a></li>
<li><a title="Variables" href="query_script_variables.html">Variables</a></li>
</ul>
<h3>DEBUG</h3>
<ul>
<li><a title="rdebug" href="rdebug.html">rdebug</a></li>
<li><a title="rdebug API" href="rdebug_api.html">rdebug API</a></li>
<li><a title="rdebug workflow" href="rdebug_workflow.html">Workflow</a></li>
</ul>
<h3>ROUTINES</h3>
<ul>
<li><a title="Execution & flow control" href="execution_routines.html">Execution & flow control</a></li>
<li><a title="General" href="general_routines.html">General</a></li>
<li><a title="Process" href="process_routines.html">Process</a></li>
<li><a title="Query analysis" href="query_analysis_routines.html">Query analysis</a></li>
<li><a title="Schema analysis" href="schema_analysis_routines.html">Schema analysis</a></li>
<li><a title="Security" href="security_routines.html">Security</a></li>
<li><a title="Text" href="text_routines.html">Text</a></li>
<li><a title="Time & date" href="temporal_routines.html">Time & date</a></li>
<li><a title="Charting" href="charting_routines.html">Charting</a></li>
</ul>
<h3>VIEWS</h3>
<ul>
<li><a title="Schema analysis" href="schema_analysis_views.html">Schema analysis</a></li>
<li><a title="Data dimension" href="data_dimension_views.html">Data dimension</a></li>
<li><a title="Process" href="process_views.html">Process</a></li>
<li><a title="Security" href="security_views.html">Security</a></li>
<li><a title="Monitoring" href="monitoring_views.html">Monitoring</a></li>
<li><a title="InnoDB Plugin" href="innodb_plugin_views.html">InnoDB Plugin</a></li>
<li><a title="Percona server" href="percona_server_views.html">Percona Server</a></li>
<li><a title="TokuDB" href="tokudb_views.html">TokuDB</a></li>
</ul>
<h3>DATA</h3>
<ul>
<li><a title="tables" href="tables.html">Tables</a></li>
<li><a title="variables" href="variables.html">Variables</a></li>
</ul>
<h3>META</h3>
<ul>
<li><a title="Help" href="help.html">help</a></li>
<li><a title="Metadata" href="metadata.html">metadata</a></li>
<li><a title="status" href="status.html">status</a></li>
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<a href="">common_schema</a> documentation
</div>
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