OTL 4.0, Example 242 (64-bit integers (bigint), MS SQL Server, OTL/ODBC)

Example 242 (64-bit integers (bigint), MS SQL Server, OTL/ODBC)

This example demonstrates the use of 64-bit integer bind variables with MS SQL Server, OTL/ODBC.

Source Code

#include <iostream>
#include <stdio.h>
using namespace std;

#define OTL_ODBC // Compile OTL 4.0/ODBC
#define OTL_BIGINT __int64 // Enabling VC++ 64-bit integers
#include <otlv4.h> // include the OTL 4.0 header file

otl_connect db; // connect object

void insert()
// insert rows into table
{ 
 otl_stream o(50, // buffer size
              "insert into test_tab values(:f1<bigint>,:f2<char[31]>)", 
                 // SQL statement
              db // connect object
             );
 char tmp[32];

 for(OTL_BIGINT i=1;i<=100;++i){
  sprintf(tmp,"Name%d",(int)i);
  o<<i<<tmp;
 }
}

void select()
{ 
 otl_stream i(50, // buffer size
              "select * from test_tab where f1>=:f<bigint> and f1<=:ff<bigint>*2",
                 // SELECT statement
              db // connect object
             ); 
   // create select stream
 
 OTL_BIGINT f1;
 char f2[31];
 char f1str[40];

 i<<(OTL_BIGINT)8<<(OTL_BIGINT)8; // assigning :f = 8; :ff = 8
   // SELECT automatically executes when all input variables are
   // assigned. First portion of output rows is fetched to the buffer

 while(!i.eof()){ // while not end-of-data
  i>>f1>>f2;
  cout<<"f1=";
  _i64toa(f1,f1str,10);
  cout<<f1str<<", f2="<<f2<<endl;
 }

}

int main()
{
 otl_connect::otl_initialize(); // initialize ODBC environment
 try{

  db.rlogon("scott/tiger@mssql"); // connect to ODBC

  otl_cursor::direct_exec
   (
    db,
    "drop table test_tab",
    otl_exception::disabled // disable OTL exceptions
   ); // drop table

  otl_cursor::direct_exec
   (
    db,
    "create table test_tab(f1 bigint, f2 varchar(30))"
    );  // create table

  insert(); // insert records into table
  select(); // select records from table

 }

 catch(otl_exception& p){ // intercept OTL exceptions
  cerr<<p.msg<<endl; // print out error message
  cerr<<p.stm_text<<endl; // print out SQL that caused the error
  cerr<<p.sqlstate<<endl; // print out SQLSTATE message
  cerr<<p.var_info<<endl; // print out the variable that caused the error
 }

 db.logoff(); // disconnect from Oracle

 return 0;

}

Output
f1=8, f2=Name8
f1=9, f2=Name9
f1=10, f2=Name10
f1=11, f2=Name11
f1=12, f2=Name12
f1=13, f2=Name13
f1=14, f2=Name14
f1=15, f2=Name15
f1=16, f2=Name16


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skuchin@yahogmail
.
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