📄 otl4_ex234.htm
字号:
<!DOCTYPE html PUBLIC "-//w3c//dtd html 4.0 transitional//en">
<html>
<head>
<meta content="text/html; charset=iso-8859-1"
http-equiv="Content-Type">
<meta content="Sergei Kuchin" name="Author">
<meta content="Mozilla/4.77 [en] (Win95; U) [Netscape]"
name="GENERATOR">
<meta
content="OTL, Oracle, ODBC, DB2, CLI, database API, C++, Template Library"
name="KeyWords">
<title>OTL 4.0, Example 234 (SQL statement label)</title>
</head>
<body>
<center>
<h1>OTL 4.0, Example 234 (SQL statement label)</h1>
</center>
<h1>
Example 234 (SQL statement label)</h1>
This example demonstrates SQL statement labels and Oracle 8, 8i, 9i.
<h2>Source Code</h2>
<pre>#include <iostream><br>#include <stdio.h><br><br>// Uncomment the line below when OCI7 is used with OTL<br>// #define OTL_ORA7 // Compile OTL 4.0/OCI7 <br>using namespace std;<br><br><pre>//#define OTL_ORA8 // Compile OTL 4.0/OCI8<br>#define OTL_ORA8I // Compile OTL 4.0/OCI8i<br>//#define OTL_ORA9I // Compile OTL 4.0/OCI9i<br>#include <otlv4.h> // include the OTL 4.0 header file<br><br><a
href="otl3_connect_class.htm">otl_connect</a> db; // connect object<br><br>void select()<br>{ <br> <a
href="otl3_stream_class.htm">otl_stream</a> i(50, // buffer size<br> "select * from test_tabxxx where f1>=:f<int> and f1<=:f*2",<br> // SELECT statement<br> db, // connect object<br> 0, // it's not a "reference cursor"<br> "SQL Stm #1"<br> ); <br> // create select stream<br> <br> float f1;<br> char f2[31];<br><br> i<<8; // assigning :f = 8<br> // SELECT automatically executes when all input variables are<br> // assigned. First portion of output rows is fetched to the buffer<br><br> while(!i.eof()){ // while not end-of-data<br> i>>f1>>f2;<br> cout<<"f1="<<f1<<", f2="<<f2<<endl;<br> }<br><br> i<<4; // assigning :f = 4<br> // SELECT automatically executes when all input variables are<br> // assigned. First portion of output rows is fetched to the buffer<br><br> while(!i.eof()){ // while not end-of-data<br> i>>f1>>f2;<br> cout<<"f1="<<f1<<", f2="<<f2<<endl;<br> }<br><br>}<br><br>int main()<br>{<br> <a
href="otl3_connect_class.htm">otl_connect::otl_initialize</a>(); // initialize OCI environment<br> try{<br><br> db.rlogon("scott/tiger"); // connect to Oracle<br><br> select(); // select records from table<br><br> }<br><br> catch(<a
href="otl3_exception_class.htm">otl_exception</a>& p){ // intercept OTL exceptions<br> cerr<<p.msg<<endl; // print out error message<br> cerr<<p.stm_text<<endl; // print out SQL that caused the error<br> cerr<<p.var_info<<endl; // print out the variable that caused the error<br> }<br><br> db.logoff(); // disconnect from Oracle<br><br> return 0;<br><br>}</pre>
<h2>
Output</h2>
<pre>ORA-00942: table or view does not exist<br><br>SQL Stm #1<br><br><br><hr
width="100%"></pre>
<center><a href="otl3_examples.htm">Examples</a> <a href="otl3.htm">Contents</a><a
href="home.htm">Go<br>Home</a></center>
<p>Copyright © 1996, 2008, Sergei Kuchin, email: <a
href="mailto:skuchin@aceweb.com">skuchin@aceweb.com</a>,<br><a
href="mailto:skuchin@gmail.com">skuchin@gmail.com<bgmailript
language="JavaScript">
<!-- hide from old browsers
var modDate = new Date(document.lastModified)
document.write("<i> Last Updated:</i> " + (modDate.getMonth()+1) + "/" +
modDate.getDate() + "/" + "0"+(modDate.getYear())%100+".");
//-->
</script></a>.<br></p>
<p><i>Permission to use, copy, modify and redistribute this document<br>for<br>any purpose is hereby granted without fee, provided that the above<br>copyright<br>notice appear in all copies.</i>
</p>
</pre>
<script type="text/javascript">
var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");
document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E"));
</script>
<script type="text/javascript">
var pageTracker = _gat._getTracker("UA-5456201-1");
pageTracker._trackPageview();
</script>
</body>
</html>
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -