# OTL 4.0, Example 91 (otl_datetime container and DATE/TIME/TIMESTAMP table columns)

# Example 91 (otl_datetime container and DATE/TIME/TIMESTAMP table columns)

This example demonstrates simple INSERT/SELECT with DB2's DATEs/TIMEs/TIMESTAMPs and otl_datetime.

## Source Code

    #include <iostream>
    using namespace std;

    #include <stdio.h>

    #define OTL_DB2_CLI // Compile OTL 4.0/DB2-CLI
    #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<db2date>, "
                  "       :f3<db2time>,:f4<timestamp>)",
                     // INSERT statement
                  db // connect object
                 );

     otl_datetime tm1, tm2, tm3;

     for(int i=1;i<=10;++i){

      tm1.year=1998;
      tm1.month=10;
      tm1.day=19;
    // time conponents should be set 0 in this
    // because it does not work otherwise for DB2 8.1,
    // and it works fine for earlier versions
    // of DB2 (6.x, 7.x)
      tm1.hour=0;
      tm1.minute=0;
      tm1.second=0;

    // date conponents should be set 0 in this
    // because it does not work otherwise for DB2 8.1,
    // and it works fine for earlier versions
    // of DB2 (6.x, 7.x)
      tm2.year=0;
      tm2.month=0;
      tm2.day=0;

      tm2.hour=23;
      tm2.minute=12;
      tm2.second=12;

      tm3.year=1998;
      tm3.month=10;
      tm3.day=19;
      tm3.hour=23;
      tm3.minute=12;
      tm3.second=12;

      o<<i<<tm1<<tm2<<tm3;

     }
    }

    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,f3,f4;

     while(!i.eof()){ // while not end-of-data
      i>>f1>>f2>>f3>>f4;
      cout<<"f1="<<f1;
      cout<<", f2="<<f2.month<<"/"<<f2.day<<"/"
          <<f2.year;
      cout<<", f3="<<f3.hour<<":"<<f3.minute<<":"
          <<f3.second;
      cout<<", f4="<<f4.month<<"/"<<f4.day<<"/"
          <<f4.year<<" "<<f4.hour<<":"<<f4.minute<<":"
          <<f4.second;
      cout<<endl;
     }

    }

    int main()
    {
     otl_connect::otl_initialize(); // initialize DB2-CLI environment
     try{

      db.rlogon("scott/tiger@db2sql"); // connect to DB2

      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 date, f3 time, f4 timestamp)"
        );  // create table

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

      db.logoff(); // disconnect from DB2

     }

     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
     }

     return 0;

    }

## Output

    f1=1, f2=10/19/1998, f3=23:12:12, f4=10/19/1998 23:12:12
    f1=2, f2=10/19/1998, f3=23:12:12, f4=10/19/1998 23:12:12
    f1=3, f2=10/19/1998, f3=23:12:12, f4=10/19/1998 23:12:12
    f1=4, f2=10/19/1998, f3=23:12:12, f4=10/19/1998 23:12:12
    f1=5, f2=10/19/1998, f3=23:12:12, f4=10/19/1998 23:12:12
    f1=6, f2=10/19/1998, f3=23:12:12, f4=10/19/1998 23:12:12
    f1=7, f2=10/19/1998, f3=23:12:12, f4=10/19/1998 23:12:12
    f1=8, f2=10/19/1998, f3=23:12:12, f4=10/19/1998 23:12:12
    f1=9, f2=10/19/1998, f3=23:12:12, f4=10/19/1998 23:12:12
    f1=10, f2=10/19/1998, f3=23:12:12, f4=10/19/1998 23:12:12

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

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