# OTL 4.0, Example 258 (64-bit signed inregers, Oracle 8/8i/9i)

This example demonstrates a simple INSERT, SELECT, constant SQL statements and bigint's with the OCI8/8i/9i

## Source Code

    #include <iostream>
    using namespace std;

    #include <stdio.h>

    #define OTL_ORA9I // Compile OTL 4.0/OCI9i
    // #define OTL_ORA8
    // #define OTL_ORA8I

    #if defined(_MSC_VER) // VC++

    // Enabling support for 64-bit signed integers
    // Since 64-bit integers are not part of the ANSI C++
    // standard, this definition is compiler specific.
    #define OTL_BIGINT __int64

    // Defining a bigint constant that is larger than
    // the max 32-bit integer value.
    const OTL_BIGINT BIGINT_VAL1=12345678901234000;

    // Defining a string-to-bigint conversion
    // that is used by OTL internally.
    // Since 64-bit ineteger conversion functions are
    // not part of the ANSI C++ standard, the code
    // below is compiler specific
    #define OTL_STR_TO_BIGINT(str,n)                \
    {                                               \
      n=_atoi64(str);                               \
    }

    // Defining a bigint-to-string conversion
    // that is used by OTL internally.
    // Since 64-bit ineteger conversion functions are
    // not part of the ANSI C++ standard, the code
    // below is compiler specific
    #define OTL_BIGINT_TO_STR(n,str)                \
    {                                               \
      _i64toa(n,str,10);                            \
    }

    #elif defined(__GNUC__) // GNU C++

    #include <stdlib.h>

    // Enabling support for 64-bit signed integers
    // Since 64-bit integers are not part of the ANSI C++
    // standard, this definition is compiler specific.
    #define OTL_BIGINT long long

    const OTL_BIGINT BIGINT_VAL1=12345678901234000LL;

    // Defining a string-to-bigint conversion
    // that is used by OTL internally.
    // Since 64-bit ineteger conversion functions are
    // not part of the ANSI C++ standard, the code
    // below is compiler specific.
    #define OTL_STR_TO_BIGINT(str,n)                \
    {                                               \
      n=strtoll(str,0,10);                          \
    }

    // Defining a bigint-to-string conversion
    // that is used by OTL internally.
    // Since 64-bit ineteger conversion functions are
    // not part of the ANSI C++ standard, the code
    // below is compiler specific
    #define OTL_BIGINT_TO_STR(n,str)                \
    {                                               \
      sprintf(str,"%lld",n);                        \
    }

    #endif

    #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=BIGINT_VAL1;i<=BIGINT_VAL1+100;++i){
      int ndx=(int)(i-BIGINT_VAL1);
      sprintf(tmp,"Name%d",ndx);
      o<<i<<tmp;
     }
    }

    void select()
    {
     otl_stream i(50, // buffer size
                  "select f1 :#1<bigint>, f2 "
                    // the default mapping of f1 needs to be overriden
                    // explicitly when bigint's are used in a combination
                    // OTL/OCIx, because the default mapping maps
                    // Oracle NUMBERs into double containers, which are not
                    // big enough to hold 64-bit signed integer values.
                  "from test_tab "
                  "where f1>=:f<bigint> "
                  "  and f1<=:ff<bigint>",
                     // SELECT statement
                  db // connect object
                 );
       // create select stream

     OTL_BIGINT f1;
     char f2[31];
    #if defined(_MSC_VER)
     char f1str[40];
    #endif

     i<<BIGINT_VAL1+8
      <<BIGINT_VAL1+16; // 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=";
    #if defined(_MSC_VER)
      _i64toa(f1,f1str,10);
      cout<<f1str<<", f2="<<f2<<endl;
    #elif defined(__GNUC__)
      cout<<f1<<", f2="<<f2<<endl;
    #endif
     }

    }

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

      db.rlogon("scott/tiger"); // connect to Oracle

      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 number, f2 varchar2(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.var_info<<endl; // print out the variable that caused the error
     }

     db.logoff(); // disconnect from Oracle

     return 0;

    }

## Output

    f1=12345678901234008, f2=Name8
    f1=12345678901234009, f2=Name9
    f1=12345678901234010, f2=Name10
    f1=12345678901234011, f2=Name11
    f1=12345678901234012, f2=Name12
    f1=12345678901234013, f2=Name13
    f1=12345678901234014, f2=Name14
    f1=12345678901234015, f2=Name15
    f1=12345678901234016, f2=Name16

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Copyright © 1996, 2007, Sergei Kuchin, email: skuchin@ispwest.com, skuchin@gmail.com/a>.

Permission to use, copy, modify and redistribute this document for any purpose is hereby granted without fee, provided that the above copyright notice appear in all copies.