# OTL 4.Example 233 (#define OTL_ORA_MAP_STRINGS_TO_CHARZ, Oracle 8, 8i, 9i)

# Example 233 (#define OTL_ORA_MAP_STRINGS_TO_CHARZ, Oracle 8, 8i, 9i)

This example demonstrates #define OTL_ORA_MAP_STRINGS_TO_CHARZ.

## Source Code

    #include <iostream>
    using namespace std;

    #include <stdio.h>

    //#define OTL_ORA8 // Compile OTL 4.0/OCI8
    //#define OTL_ORA9I // Compile OTL 4.0/OCI9i
    #define OTL_ORA8I // Compile OTL 4.0/OCI8i
    #define OTL_ORA_MAP_STRINGS_TO_CHARZ
    #include <otlv4.h> // include the OTL 4.0 header file

    otl_connect db; // connect object

    void insert()
    // insert rows into table
    {
     otl_stream o(5, // buffer size
                  "insert into test_tab values(:f1<int>,:f2<char[11]>)",
                     // SQL statement
                  db // connect object
                 );
      o<<1<<"Name";
      o<<2<<"Name ";
      o<<3<<"Name  ";
    }

    void select()
    {
     otl_stream i(5, // buffer size
                  "select * from test_tab where f2=:f2<char[11]>",
                     // SELECT statement
                  db // connect object
                 );
       // create select stream

     int f1;
     char f2[31];

     i<<"Name"; // assigning :f2 = 'Name'
       // 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="<<f1<<", f2='"<<f2<<"'"<<endl;
     }

    }

    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(10))"
        );  // create table

      cout<<"========= table with a VARCHAR2 column ========"<<endl;
      insert(); // insert records into table
      select(); // select records from table

      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 char(10))"
        );  // create table

      cout<<"========= table with a CHAR column ========"<<endl;
      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

    ========= table with a VARCHAR2 column ========
    f1=1, f2='Name'
    ========= table with a CHAR column ========
    f1=1, f2='Name      '
    f1=2, f2='Name      '
    f1=3, f2='Name      '

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