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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"><html><head> <title>OTL 4.0, Example 431 (64-bit integers (bigint), Sybase SQLServer, OTL/DOBC)</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 431 (64-bit integers (bigint),Sybase SQL Server, OTL/ODBC)</h1><p>This example demonstrates the use of 64-bit integer bind variableswith Sybase SQL Server, OTL/ODBC.</p><h2>Source Code</h2><pre>#include <iostream><br>#include <stdio.h><br>using namespace std;<br><br>#define OTL_ODBC_UNIX // Compile OTL 4.0/ODBC<br><pre>#define <a href="otl3_compile.htm#OTL_BIGINT">OTL_BIGINT</a> long long // Enabling 64-bit integers<br><br>// Defining a string-to-bigint conversion <br>// that is used by OTL internally.<br>// Since 64-bit integer conversion functions are<br>// not part of the ANSI C++ standard, the code<br>// below is compiler specific.<br>#define OTL_STR_TO_BIGINT(str,n) \<br>{ \<br> n=strtoll(str,0,10); \<br>}<br><br>// Defining a bigint-to-string conversion <br>// that is used by OTL internally.<br>// Since 64-bit ineteger conversion functions are<br>// not part of the ANSI C++ standard, the code<br>// below is compiler specific<br>#define OTL_BIGINT_TO_STR(n,str) \<br>{ \<br> sprintf(str,"%lld",n); \<br>}<br><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()<br>// insert rows into table<br>{ <br> <a href="otl3_stream_class.htm">otl_stream</a> o(50, // buffer size<br> "insert into test_tab values(:f1<<a href="otl3_bind_variables.htm#bigint">bigint</a>>,:f2<char[31]>)", <br> // SQL statement<br> db // connect object<br> );<br> char tmp[32];<br><br> for(OTL_BIGINT i=1;i<=100;++i){<br> sprintf(tmp,"Name%d",(int)i);<br> o<<i<<tmp;<br> }<br>}<br><br>void select()<br>{ <br> <a href="otl3_stream_class.htm">otl_stream</a> i(50, // buffer size<br> "select * from test_tab where f1>=:f<bigint> and f1<=:ff<bigint>*2",<br> // SELECT statement<br> db // connect object<br> ); <br> // create select stream<br> <br> OTL_BIGINT f1;<br> char f2[31];<br><br> i<<(OTL_BIGINT)8<<(OTL_BIGINT)8; // assigning :f = 8; :ff = 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=";<br> cout<<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 ODBC environment<br> try{<br><br> db.rlogon("scott/tigger@sybsql"); // connect to ODBC<br><br> <a href="otl3_const_sql.htm">otl_cursor::direct_exec<br></a> (<br> db,<br> "drop table test_tab",<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_tab(f1 bigint, f2 varchar(30))"<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=8, f2=Name8<br>f1=9, f2=Name9<br>f1=10, f2=Name10<br>f1=11, f2=Name11<br>f1=12, f2=Name12<br>f1=13, f2=Name13<br>f1=14, f2=Name14<br>f1=15, f2=Name15<br>f1=16, f2=Name16<br><hr width="100%"></pre></pre><div style="text-align: center;"><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@gmail.com</a>.<script language="JavaScript"><!-- hide from oldgmailsers 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></div><pre><center></center></pre></body></html>⌨️ 快捷键说明
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