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<title>OTL 4.0, Example 502 (MS SQL Server stored procedure)</title>
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<h1 align="center">OTL 4.0, Example 502 (MS SQL Server stored procedure
call)</h1>
<p>This example demonstrates a stored procedure call.<br>
</p>
<h2>Source Code</h2>
<pre>#include <iostream><br>using namespace std;<br><br>#include <stdio.h><br>#define <a
href="otl3_compile.htm#OTL_ODBC_MSSQL_2005">OTL_ODBC_MSSQL_2005</a> // Compile OTL 4/ODBC, MS SQL 2005<br>//#define OTL_ODBC // Compile OTL 4/ODBC. Uncomment this when used with MS SQL 7.0/ 2000<br>//#define OTL_ODBC_UNIX // Compile OTL 4 / ODBC. Uncomment this when used in Linux / Unix<br>#include <otlv4.h><br><br><a
href="otl3_connect_class.htm">otl_connect</a> db; // connect object<br><br>void stored_proc(void)<br>// invoking stored procedure<br>{ <br> <a
href="otl3_stream_class.htm">otl_stream</a> o(1, // buffer size should be equal to 1 in case of stored procedure call<br> "{call my_proc("<br> " :A<int,inout>, "<br> " :B<char[31],out>, "<br> " :C<char[31],in> "<br> ")}",<br> // stored procedure call<br> db // connect object<br> );<br><br> o.<a
href="otl3_stream_class.htm#set_commit">set_commit</a>(0); // set stream auto-commit off since<br> // the stream does not generate transaction<br><br> o<<1<<"Test String1"; // assigning :1 = 1, :3 = "Test String1"<br><br> int a;<br> char b[31];<br><br> o>>a>>b;<br> cout<<"A="<<a<<", B="<<b<<endl;<br><br>}<br><br>int main()<br>{<br> otl_connect::otl_initialize(); // initialize ODBC environment<br> try{<br> db.rlogon("uid=scott;pwd=tiger;dsn=freetds_mssql"); // connect to ODBC<br> db.direct_exec("drop procedure my_proc",0); // drop the procedure if it exists.<br> db.direct_exec<br> (<br> "CREATE PROCEDURE my_proc "<br> " @A int out, "<br> " @B varchar(60) out, "<br> " @C varchar(60) "<br> "AS "<br> "BEGIN "<br> " SELECT @A=@A+1"<br> " SELECT @B=@C "<br> "END"<br> ); // create stored procedure<br><br> stored_proc(); // invoking stored procedure<br> }<br> catch(otl_exception& p){ // intercept OTL exceptions<br> cerr<<p.msg<<endl; // print out error message<br> cerr<<p.code<<endl; // print out error code<br> cerr<<p.var_info<<endl; // print out the variable that caused the error<br> cerr<<p.sqlstate<<endl; // print out SQLSTATE message<br> cerr<<p.stm_text<<endl; // print out SQL that caused the error<br> }<br> db.logoff(); // disconnect from the data source<br> return 0;<br>} <br><br><br></pre>
<h2>Output</h2>
<pre> A=2, B=Test String1<br><br><hr width="100%"></pre>
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<p>Copyright © 1996, 2008, Sergei Kuchin, email: <a
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