<?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 del</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 TCL API Reference" /> <link rel="up" href="tclapi.html" title="Chapter 1. Berkeley DB Tcl APIs" /> <link rel="prev" href="db_cursor.html" title="db cursor" /> <link rel="next" href="db_get.html" title="db get" /> </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"><span xmlns="http://www.w3.org/1999/xhtml" class="emphasis"><em>db</em></span> del</th> </tr> <tr> <td width="20%" align="left"><a accesskey="p" href="db_cursor.html">Prev</a> </td> <th width="60%" align="center">Chapter 1. Berkeley DB Tcl APIs </th> <td width="20%" align="right"> <a accesskey="n" href="db_get.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="db_del"></a><span class="emphasis"><em>db</em></span> del</h2> </div> </div> </div> <pre class="programlisting">db del [-glob] [-txn txnid] key </pre> <p> The <span class="emphasis"><em>db</em></span> <span class="bold"><strong>del</strong></span> command removes key/data pairs from the database. </p> <p> In the presence of duplicate key values, all records associated with the designated key will be discarded. </p> <p> The options are as follows: </p> <div class="itemizedlist"> <ul type="disc"> <li> <p> <span class="bold"><strong>-glob</strong></span> </p> <p> The specified key is a wildcard pattern, and all keys matching that pattern are discarded from the database. The pattern is a simple wildcard, any characters after the wildcard character are ignored. This option only works on databases using the Btree access method. </p> </li> <li> <p> <span class="bold"><strong>-txn txnid</strong></span> </p> <p> If the operation is part of an application-specified transaction, the <span class="bold"><strong>txnid</strong></span> parameter is a transaction handle returned from <span class="emphasis"><em>env</em></span> <span class="bold"><strong>txn</strong></span>. If no transaction handle is specified, but the operation occurs in a transactional database, the operation will be implicitly transaction protected. </p> </li> </ul> </div> <p> The <span class="emphasis"><em>db</em></span> <span class="bold"><strong>del</strong></span> command returns 0 on success, and in the case of error, a Tcl error is thrown. </p> </div> <div class="navfooter"> <hr /> <table width="100%" summary="Navigation footer"> <tr> <td width="40%" align="left"><a accesskey="p" href="db_cursor.html">Prev</a> </td> <td width="20%" align="center"> <a accesskey="u" href="tclapi.html">Up</a> </td> <td width="40%" align="right"> <a accesskey="n" href="db_get.html">Next</a></td> </tr> <tr> <td width="40%" align="left" valign="top"><span class="emphasis"><em>db</em></span> cursor </td> <td width="20%" align="center"> <a accesskey="h" href="index.html">Home</a> </td> <td width="40%" align="right" valign="top"> <span class="emphasis"><em>db</em></span> get</td> </tr> </table> </div> </body> </html>