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<title>OTL 4.0, Example 651 (SQL statement label)</title>
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<h1>OTL 4.0, Example 651 (SQL statement label)</h1>
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This example demonstrates SQL statement labels.<br>
<h2>Source Code</h2>
<pre>#include <iostream><br>using namespace std;<br>#include <stdio.h><br><br>// Compile OTL 4.0/ODBC in Windows. Informix CLI uses the <br>// regular ODBC header files in Windows<br>#define <a
href="otl3_compile.htm#OTL_ODBC">OTL_ODBC</a> <br><br>// Uncomment the #defines below in Linux / Unix<br>//#define <a
href="otl3_compile.htm#OTL_ODBC_UNIX">OTL_ODBC_UNIX</a><br>//#define <a
href="otl3_compile.htm#OTL_INFORMIX_CLI">OTL_INFORMIX_CLI</a><br>#include <otlv4.h> // include the OTL 4.0 header file<br><pre><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>=:f11<int> and f1<=:f12<int>*2",<br> // SELECT statement<br> db, // connect object<br> otl_explicit_select, // this parameter has the default value of "explicit select",<br> // yet it has to be specified because of the next parameter<br> "SQL Stm #1" // SQL statement label.<br> ); <br> // create select stream<br> <br> float f1;<br> char f2[31];<br><br> i<<8<<8; // assigning :f11 = 8, :f12 = 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<<4; // assigning :f11 = 4, :f12 = 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 Informix CLI environment<br> try{<br><br> db.rlogon("informix/tigger@informixsql"); // connect to Informix<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 Informix<br><br> return 0;<br><br>}</pre><br><h2><br>Output</h2><pre>[Informix][Informix ODBC Driver][Informix]The specified table (test_tabxxx) is not in the database.<br>SQL Stm #1<br></pre></pre>
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