<?xml version="1.0" encoding="UTF-8" standalone="no"?> <!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>DB->sort_multiple()</title> <link rel="stylesheet" href="apiReference.css" type="text/css" /> <meta name="generator" content="DocBook XSL Stylesheets V1.73.2" /> <link rel="start" href="index.html" title="Berkeley DB C API Reference" /> <link rel="up" href="db.html" title="Chapter 2. The DB Handle" /> <link rel="prev" href="dbset_re_source.html" title="DB->set_re_source()" /> <link rel="next" href="dbstat.html" title="DB->stat()" /> </head> <body> <div xmlns="" class="navheader"> <div class="libver"> <p>Library Version 11.2.5.3</p> </div> <table width="100%" summary="Navigation header"> <tr> <th colspan="3" align="center">DB->sort_multiple()</th> </tr> <tr> <td width="20%" align="left"><a accesskey="p" href="dbset_re_source.html">Prev</a> </td> <th width="60%" align="center">Chapter 2. The DB Handle </th> <td width="20%" align="right"> <a accesskey="n" href="dbstat.html">Next</a></td> </tr> </table> <hr /> </div> <div class="sect1" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h2 class="title" style="clear: both"><a id="dbsort_multiple"></a>DB->sort_multiple()</h2> </div> </div> </div> <pre class="programlisting">#include <db.h> int DB->sort_multiple(DB *db, DBT *key, DBT *data, u_int32_t flags); </pre> <p> The <code class="methodname">DB->sort_multiple()</code> method is used to sort a set of <a class="link" href="dbt.html" title="Chapter 4. The DBT Handle">DBT</a>s into database insert order. </p> <p> If specified the application specific btree comparison and duplicate comparison functions will be used if they are configured. </p> <p> The key and data parameters must contain pairs of items. That is the n-th entry in <span class="bold"><strong>key</strong></span> must correspond to the n-th entry in <span class="bold"><strong>data</strong></span>. </p> <p> The <code class="methodname">DB->sort_multiple()</code> <span> <span> method returns a non-zero error value on failure and 0 on success. </span> </span> </p> <div class="sect2" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h3 class="title"><a id="idp50586688"></a>Parameters</h3> </div> </div> </div> <div class="sect3" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h4 class="title"><a id="idp50576184"></a>key</h4> </div> </div> </div> <p> The <span class="bold"><strong>key</strong></span> parameter must contain a set of <a class="link" href="dbt.html" title="Chapter 4. The DBT Handle">DBT</a> entries in <a class="link" href="dbcget.html#dbcget_DB_MULTIPLE">DB_MULTIPLE</a> or <a class="link" href="dbcget.html#dbcget_DB_MULTIPLE_KEY">DB_MULTIPLE_KEY</a> format. </p> <p> The sorted entries will be returned in the <span class="bold"><strong>key</strong></span> parameter. </p> </div> <div class="sect3" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h4 class="title"><a id="idp50585888"></a>data</h4> </div> </div> </div> <p> If non-NULL, the <span class="bold"><strong>data</strong></span> parameter must contain a set of <a class="link" href="dbt.html" title="Chapter 4. The DBT Handle">DBT</a>s entries in <a class="link" href="dbcget.html#dbcget_DB_MULTIPLE">DB_MULTIPLE</a> format. Each entry must correspond to an entry in the <span class="bold"><strong>key</strong></span> parameter. </p> </div> <div class="sect3" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h4 class="title"><a id="idp50579488"></a>flags</h4> </div> </div> </div> <p> The <span class="bold"><strong>flags</strong></span> parameter must be set to one of the following values: </p> <div class="itemizedlist"> <ul type="disc"> <li> <p><a id="sort_multiple_DB_MULTIPLE"></a> DB_MULTIPLE </p> <p> Sorts one or two <a class="link" href="dbcget.html#dbcget_DB_MULTIPLE">DB_MULTIPLE</a> format <a class="link" href="dbt.html" title="Chapter 4. The DBT Handle">DBT</a>s. Assumes that <span class="bold"><strong>key</strong></span> and <span class="bold"><strong>data</strong></span> specify pairs of key and data items to sort together. If the <span class="bold"><strong>data</strong></span> parameter is NULL the API will sort the key arrays according to the btree comparison function. </p> </li> <li> <p><a id="sort_multiple_DB_MULTIPLE_KEY"></a> DB_MULTIPLE_KEY </p> <p> Sorts a <a class="link" href="dbcget.html#dbcget_DB_MULTIPLE_KEY">DB_MULTIPLE_KEY</a> format <a class="link" href="dbt.html" title="Chapter 4. The DBT Handle">DBT</a>. </p> </li> </ul> </div> </div> </div> <div class="sect2" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h3 class="title"><a id="idp50582152"></a>Errors</h3> </div> </div> </div> <p> The <code class="methodname">DB->sort_multiple()</code> <span> <span> method may fail and return one of the following non-zero errors: </span> </span> </p> <div class="sect3" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h4 class="title"><a id="idp50619624"></a>EACCES</h4> </div> </div> </div> <p> An attempt was made to modify a read-only database. </p> </div> <div class="sect3" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h4 class="title"><a id="idp50622808"></a>EINVAL</h4> </div> </div> </div> <p> An invalid flag value or parameter was specified. </p> </div> </div> <div class="sect2" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h3 class="title"><a id="idp50619088"></a>Class</h3> </div> </div> </div> <p> <a class="link" href="db.html" title="Chapter 2. The DB Handle">DB</a> </p> </div> <div class="sect2" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h3 class="title"><a id="idp50622056"></a>See Also</h3> </div> </div> </div> <p> <a class="xref" href="db.html#dblist" title="Database and Related Methods">Database and Related Methods</a> </p> <p> </p> <p> <a class="xref" href="dbt.html#dbtlist" title="DBT and Bulk Operations">DBT and Bulk Operations</a> </p> </div> </div> <div class="navfooter"> <hr /> <table width="100%" summary="Navigation footer"> <tr> <td width="40%" align="left"><a accesskey="p" href="dbset_re_source.html">Prev</a> </td> <td width="20%" align="center"> <a accesskey="u" href="db.html">Up</a> </td> <td width="40%" align="right"> <a accesskey="n" href="dbstat.html">Next</a></td> </tr> <tr> <td width="40%" align="left" valign="top">DB->set_re_source() </td> <td width="20%" align="center"> <a accesskey="h" href="index.html">Home</a> </td> <td width="40%" align="right" valign="top"> DB->stat()</td> </tr> </table> </div> </body> </html>