# OTL 4.0, Example 422 (otl_datetime container with Datetime values down to milliseconds in MS SQL Server)

This example demonstrates simple INSERT/SELECT with Sybase SQL Server's datetime's and otl_datetime.

## Source Code

    #include <iostream>
    using namespace std;

    #include <stdio.h>

    #define OTL_ODBC_UNIX // Compile OTL 4.0/ODBC
    #include <otlv4.h> // include the OTL 4.0 header file

    otl_connect db; // connect object

    void insert(void)
    // insert rows into table
    {
     otl_stream o(3, // stream buffer size in logical rows.
                  "insert into test_tab "
                  "values(:f1<int>,:f2<timestamp>)",
                     // INSERT statement
                  db // connect object
                 );

     otl_datetime tm;

     for(int i=1;i<=10;++i){
      tm.year=2007;
      tm.month=10;
      tm.day=19;
      tm.hour=23;
      tm.minute=12;
      tm.second=12;
      tm.frac_precision=3; // milliseconds
      tm.fraction=123;
      o<<i<<tm;
     }
    }

    void select(void)
    {
     otl_stream i(5, // stream buffer size in logical rows
                  "select * from test_tab",
                     // SELECT statement
                  db // connect object
                 );

     int f1;
     otl_datetime f2;

     // Second's precision needs to be specified BEFORE the stucture can be
     // used either for writnig or reading timestamp values, which have second's
     // fractional part.
     f2.frac_precision=3; // milliseconds

     while(!i.eof()){ // while not end-of-data
      i>>f1>>f2;
      cout<<"f1="<<f1;
      cout<<", f2="<<f2.month<<"/"<<f2.day<<"/"
          <<f2.year<<" "<<f2.hour<<":"<<f2.minute<<":"
          <<f2.second<<"."
          <<f2.fraction;
      cout<<endl;
     }

    }

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

      db.rlogon("scott/tigger@sybsql"); // connect to Sybase SQL Server

      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 datetime)"
        );  // 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 MS SQL Server

     return 0;

    }

## Output

    f1=1, f2=10/19/2007 23:12:12.123
    f1=2, f2=10/19/2006 23:12:12.123
    f1=3, f2=10/19/2006 23:12:12.123
    f1=4, f2=10/19/2006 23:12:12.123
    f1=5, f2=10/19/2006 23:12:12.123
    f1=6, f2=10/19/2006 23:12:12.123
    f1=7, f2=10/19/2006 23:12:12.123
    f1=8, f2=10/19/2006 23:12:12.123
    f1=9, f2=10/19/2006 23:12:12.123
    f1=10, f2=10/19/2006 23:12:12.123
    f1=8, f2=10/19/2006 23:12:12.123
    f1=9, f2=10/19/2006 23:12:12.123

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

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