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95 lines
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HTML
95 lines
4 KiB
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">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
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<title>dbc dup</title>
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<meta name="generator" content="DocBook XSL Stylesheets V1.73.2" />
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<link rel="start" href="index.html" title="Berkeley DB TCL API Reference" />
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<link rel="up" href="tclapi.html" title="Chapter 1. Berkeley DB Tcl APIs" />
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<link rel="prev" href="dbc_del.html" title="dbc del" />
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<body>
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<div xmlns="" class="navheader">
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<div class="libver">
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<p>Library Version 11.2.5.2</p>
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</div>
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<table width="100%" summary="Navigation header">
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<tr>
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<th colspan="3" align="center"><span xmlns="http://www.w3.org/1999/xhtml" class="emphasis"><em>dbc</em></span> dup</th>
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</tr>
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<tr>
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<td width="20%" align="left"><a accesskey="p" href="dbc_del.html">Prev</a> </td>
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<th width="60%" align="center">Chapter 1.
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Berkeley DB Tcl APIs
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</th>
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<td width="20%" align="right"> <a accesskey="n" href="dbc_get.html">Next</a></td>
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</tr>
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<hr />
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</div>
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<div class="sect1" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h2 class="title" style="clear: both"><a id="dbc_dup"></a><span class="emphasis"><em>dbc</em></span> dup</h2>
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</div>
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</div>
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</div>
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<pre class="programlisting">dbc dup
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[-position] </pre>
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<p>
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The <span class="emphasis"><em>dbc</em></span> <span class="bold"><strong>dup</strong></span>
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command duplicates the cursor, creates a new cursor that uses the same
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transaction and locker ID as the original cursor. This is useful when
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an application is using locking and requires two or more cursors in
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the same thread of control.
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</p>
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<p>
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The options are as follows:
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</p>
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<div class="itemizedlist">
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<ul type="disc">
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<li>
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<p>
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<span class="bold"><strong>-position</strong></span>
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</p>
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<p>
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The newly created cursor is initialized to refer to the same position
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in the database as the original cursor and hold the same locks. If the
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<span class="bold"><strong>-position</strong></span> flag is not specified, the
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created cursor is uninitialized and will behave like a cursor newly
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created using the <span class="emphasis"><em>db</em></span> <span class="bold"><strong>cursor</strong></span> command.
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</p>
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</li>
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</ul>
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</div>
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<p>
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The <span class="emphasis"><em>dbc</em></span> <span class="bold"><strong>dup</strong></span>
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command returns 0 on success, and in the case of error, a Tcl error is
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thrown.
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</p>
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</div>
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<hr />
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<td width="40%" align="left"><a accesskey="p" href="dbc_del.html">Prev</a> </td>
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<a accesskey="u" href="tclapi.html">Up</a>
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<td width="40%" align="right"> <a accesskey="n" href="dbc_get.html">Next</a></td>
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</tr>
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<tr>
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<td width="40%" align="left" valign="top"><span class="emphasis"><em>dbc</em></span> del </td>
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<td width="20%" align="center">
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<a accesskey="h" href="index.html">Home</a>
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</td>
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<td width="40%" align="right" valign="top"> <span class="emphasis"><em>dbc</em></span> get</td>
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