1<!--$Id: db_get_join.so,v 11.18 2002/08/18 21:17:25 bostic Exp $--> 2<!--$Id: m4.tcl,v 11.28 2004/12/16 19:13:05 bostic Exp $--> 3<!--Copyright (c) 1997,2008 Oracle. All rights reserved.--> 4<!--See the file LICENSE for redistribution information.--> 5<html> 6<head> 7<title>Berkeley DB: db get_join</title> 8<meta name="description" content="Berkeley DB: An embedded database programmatic toolkit."> 9<meta name="keywords" content="embedded,database,programmatic,toolkit,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,Java,C,C++"> 10</head> 11<body bgcolor=white> 12<table width="100%"><tr valign=top> 13<td> 14<b><i>db</i> <b>get_join</b></b> 15</td> 16<td align=right> 17<a href="../api_tcl/api_tcl.html"><img src="../images/api.gif" alt="API"></a> 18<a href="../ref/toc.html"><img src="../images/ref.gif" alt="Ref"></a></td> 19</tr></table> 20<hr size=1 noshade> 21<tt> 22<b><pre>db get_join 23 [-txn txnid] 24 {<i>db</i> key} 25 {<i>db</i> key} 26 ... 27</pre></b> 28<b>Description(db get_join)</b> 29<p>The <i>db</i> <b>get_join</b> command performs the cursor operations required to 30join the specified keys and returns a list of joined {key data} pairs. 31See <a href="../ref/am/join.html">Equality join</a> for more information on 32the underlying requirements for joining.</p> 33<p>The options are as follows:</p> 34<br> 35<b>-txn txnid</b><ul compact><li>If the operation is part of an application-specified transaction, the 36<b>txnid</b> parameter is a transaction handle returned from 37<i>env</i> <b>txn</b>. If no transaction handle is specified, but the 38operation occurs in a transactional 39database, 40the operation will be implicitly transaction protected.</ul> 41<br> 42<p>In the case of error, a Tcl error is thrown.</p> 43</tt> 44<table width="100%"><tr><td><br></td><td align=right> 45<a href="../api_tcl/api_tcl.html"><img src="../images/api.gif" alt="API"></a><a href="../ref/toc.html"><img src="../images/ref.gif" alt="Ref"></a> 46</td></tr></table> 47<p><font size=1>Copyright (c) 1996,2008 Oracle. All rights reserved.</font> 48</body> 49</html> 50