#include <iostream>
#include <vector>
#include <iterator>
#include <string>
#include <cstring>
#include <cstdlib>

#define OTL_ODBC_MYSQL // Compile OTL 4/MyODBC
// #define OTL_ODBC_UNIX // uncomment this line if UnixODBC is used
#define OTL_STL // Turn on STL features
#ifndef OTL_ANSI_CPP
#define OTL_ANSI_CPP // Turn on ANSI C++ typecasts
#endif
#include <otlv4.h> // include the OTL 4 header file

using namespace std;

otl_connect db; // connect object

// row container class
class row{
public:
?int f1;
?string f2;

// default constructor
? row():
??? f1(0),
??? f2()
?{
?}

// destructor
?~row(){}

// copy constructor
? row(const row& arow):
??? f1(arow.f1),
??? f2(arow.f2)
?{
?}
?
// assignment operator
?row& operator=(const row& arow)
?{
? this->f1=arow.f1;
? this->f2=arow.f2;
? return *this;
?}

};

// redefined operator>> for reading row& from otl_stream
otl_stream& operator>>(otl_stream& s, row& row)
{
?s>>row.f1>>row.f2;
?return s;
}

// redefined operator<< for writing row& into otl_stream
otl_stream& operator<<(otl_stream& s, const row& row)
{
?s<<row.f1<<row.f2;
?return s;
}

// redefined operator<< writing row& into ostream
ostream& operator<<(ostream& s, const row& row)
{
?s<<"f1="<<row.f1<<", f2="<<row.f2;
?return s;
}

void insert()
// insert rows into table
{
?otl_stream o(1, // buffer size should be == 1 on INSERT
????????????? "insert into test_tab values(:f1<int>,:f2<char[31]>)",
???????????????? // INSERT statement
????????????? db // connect object
???????????? );

?row r; // single row buffer
?vector<row> vo; // vector of rows

// populate the vector
?for(int i=1;i<=100;++i){
? r.f1=i;
? r.f2="NameXXX";
? vo.push_back(r);
?}

?cout<<"vo.size="<<static_cast<int>(vo.size())<<endl;

// insert vector into table
?copy(vo.begin(),
????? vo.end(),
????? otl_output_iterator<row>(o)
???? );

}

void select(const int af1)
{

? char stmbuf[1024];
#if defined(_MSC_VER)
#if (_MSC_VER >= 1400) // VC++ 8.0 or higher
? sprintf_s(stmbuf,sizeof(stmbuf),
??????????? "select * from test_tab where f1>=%d and f1<=%d*2",
??????????? af1,
??????????? af1
?????????? );
#else
? sprintf(stmbuf,
????????? "select * from test_tab where f1>=%d and f1<=%d*2",
????????? af1,
????????? af1
???????? );
#endif
#else
? sprintf(stmbuf,
????????? "select * from test_tab where f1>=%d and f1<=%d*2",
????????? af1,
????????? af1
???????? );
#endif

?otl_stream i(50, // buffer size may be > 1
????????????? stmbuf, // SELECT statement
????????????? db // connect object
???????????? );
?? // create select stream
?
?vector<row> v; // vector of rows


// copy all rows to be fetched into the vector

?copy(otl_input_iterator<row,ptrdiff_t>(i),
????? otl_input_iterator<row,ptrdiff_t>(),
????? back_inserter(v));???

?cout<<"Size="<<static_cast<int>(v.size())<<endl;

// send the vector to cout
?copy(v.begin(), v.end(), ostream_iterator<row>(cout, "\n"));

}

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

? db.rlogon("UID=scott;PWD=tiger;DSN=mysql"); // 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 int, f2 varchar(30))"
??? );? // create table

? insert(); // insert records into table
? select(8); // 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.var_info<<endl; // print out the variable that caused the error
?}

?db.logoff(); // disconnect from ODBC

?return 0;

}

use otl4 connect to mysql example 83