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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"><html><head> <title>OTL 4.0, Example 548 (TIMESTAMP_STRUCT and Sybase SQL Server)</title> <meta name="Author" content="Sergei Kuchin"> <meta name="GENERATOR" content="Mozilla/3.03Gold (Win95; I) [Netscape]"> <meta name="KeyWords" content="OTL, Oracle, ODBC, DB2, CLI, database API, C++, Template Library"></head><body><h1 align="center">OTL 4.0, Example 548 (TIMESTAMP_STRUCT and SybaseSQL Server)</h1><p>This example demonstrates simple INSERT and SELECT with Sybase SQLServerDATETIMEs and TIMESTAMP_STRUCTs.</p><h2>Source Code</h2><pre>#include <iostream><br>using namespace std;<br><br>#include <stdio.h></pre><pre>#define OTL_ODBC_UNIX // Compile OTL 4.0/ODBC<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 insert(void)<br>// insert rows into table<br>{ <br> otl_stream o(50, // buffer size<br> "insert into test_tab2 values(:f1<float>,:f2<timestamp>)", <br> // SQL statement<br> db // connect object<br> );<br><br> TIMESTAMP_STRUCT tm;<br><br> for(int i=1;i<=10;++i){<br> tm.year=1998;<br> tm.month=10;<br> tm.day=19;<br> tm.hour=23;<br> tm.minute=12;<br> tm.second=12;<br> tm.fraction=0;<br> o<<(float)i<<tm;<br> }<br>}<br><br>void select(void)<br>{ <br> otl_stream i(50, // buffer size<br> "select * from test_tab2 where f2=:f1<timestamp>",<br> // SELECT statement<br> db // connect object<br> ); <br> // create select stream<br> <br> int f1;<br> TIMESTAMP_STRUCT tm,f2;<br><br> tm.year=1998;<br> tm.month=10;<br> tm.day=19;<br> tm.hour=23;<br> tm.minute=12;<br> tm.second=12;<br> tm.fraction=0;<br><br> i<<tm; // assigning :f1 = tm<br> // SELECT automatically executes when all input variables are<br> // assigned. First portion of out 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.month<<"/"<<f2.day<<"/"<br> <<f2.year<<" "<<f2.hour<<":"<<f2.minute<<":"<br> <<f2.second<<"."<<f2.fraction<br> <<endl;<br> }<br> <br>}</pre><pre>int main()<br>{<br> <a href="otl3_connect_class.htm">otl_connect::otl_initialize</a>(); // initialize ODBC environment<br> try{<br><br> db.rlogon("scott/tigger@freetds_sybsql"); // connect to ODBC<br><br> <a href="otl3_const_sql.htm">otl_cursor::direct_exec<br></a> (<br> db,<br> "drop table test_tab2",<br> otl_exception::disabled // disable OTL exceptions<br> ); // drop table<br><br> <a href="otl3_const_sql.htm">otl_cursor::direct_exec<br></a> (<br> db,<br> "create table test_tab2(f1 int, f2 datetime)"<br> ); // create table<br><br> insert(); // insert records into table<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.sqlstate<<endl; // print out SQLSTATE message<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>}<br></pre><h2>Output</h2><pre>f1=1, f2=10/19/1998 23:12:12.0<br>f1=2, f2=10/19/1998 23:12:12.0<br>f1=3, f2=10/19/1998 23:12:12.0<br>f1=4, f2=10/19/1998 23:12:12.0<br>f1=5, f2=10/19/1998 23:12:12.0<br>f1=6, f2=10/19/1998 23:12:12.0<br>f1=7, f2=10/19/1998 23:12:12.0<br>f1=8, f2=10/19/1998 23:12:12.0<br>f1=9, f2=10/19/1998 23:12:12.0<br>f1=10, f2=10/19/1998 23:12:12.0<br><br><br><br><br><hr width="100%"></pre><center><p><a href="otl3_examples.htm">Examples</a> <a href="otl3.htm">Contents</a><a href="home.htm">Go Home</a> </p></center><p>Copyright © 1996, 2008, Sergei Kuchin, email: <a href="mailto:skuchin@aceweb.com">skuchin@aceweb.com</a>,<a href="mailto:skuchin@gmail.com">skuchin@yahogmail</a><script 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>.</p><p><i>Permission to use, copy, modify and redistribute this documentforany purpose is hereby granted without fee, provided that the abovecopyrightnotice appear in all copies. </i></p></body></html>⌨️ 快捷键说明
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