# OTL 4.0, Example 26 (TIMESTAMP_STRUCT and Oracle)

# Example 26 (TIMESTAMP_STRUCT and Oracle)

This example demonstrates simple INSERT and SELECT with Oracle DATEs and TIMESTAMP_STRUCTs.

## Source Code

    #include <iostream>
    using namespace std;

    #include <stdio.h>

    #define OTL_ODBC // 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(50, // buffer size
                  "insert into test_tab2 values(:f1<float>,:f2<timestamp>)",
                     // SQL statement
                  db // connect object
                 );

     TIMESTAMP_STRUCT tm;

     for(int i=1;i<=10;++i){
      tm.year=1998;
      tm.month=10;
      tm.day=19;
      tm.hour=23;
      tm.minute=12;
      tm.second=12;
      tm.fraction=0;
      o<<(float)i<<tm;
     }
    }

    void select(void)
    {
     otl_stream i(50, // buffer size
                  "select * from test_tab2 where f2=:1<timestamp>",
                     // SELECT statement
                  db // connect object
                 );
       // create select stream

     int f1;
     TIMESTAMP_STRUCT tm,f2;

     tm.year=1998;
     tm.month=10;
     tm.day=19;
     tm.hour=23;
     tm.minute=12;
     tm.second=12;
     tm.fraction=0;

     i<<tm; // assigning :1 = tm
       // SELECT automatically executes when all input variables are
       // assigned. First portion of out rows is fetched to the buffer

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

    }

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

      db.rlogon("UID=scott;PWD=tiger;DSN=my_db"); // connect to ODBC

      otl_cursor::direct_exec
       (
        db,
        "drop table test_tab2",
        otl_exception::disabled // disable OTL exceptions
       ); // drop table

      otl_cursor::direct_exec
       (
        db,
        "create table test_tab2(f1 int, f2 date)"
        );  // 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=1, f2=10/19/1998 23:12:12.0
    f1=2, f2=10/19/1998 23:12:12.0
    f1=3, f2=10/19/1998 23:12:12.0
    f1=4, f2=10/19/1998 23:12:12.0
    f1=5, f2=10/19/1998 23:12:12.0
    f1=6, f2=10/19/1998 23:12:12.0
    f1=7, f2=10/19/1998 23:12:12.0
    f1=8, f2=10/19/1998 23:12:12.0
    f1=9, f2=10/19/1998 23:12:12.0
    f1=10, f2=10/19/1998 23:12:12.0

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

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