# OTL 4.0, Example 191 (Simple Unicode Insert/Select with LONG)

# Example 191 (Simple Unicode Insert/Select with LONG)

This example demonstrates simple Unicode INSERT, SELECT, and constant SQL statements with LONG columns..

## Source Code

    #include <iostream>
    using namespace std;

    #include <stdio.h>

    #define OTL_ORA9I // Compile OTL 4.0/OCI9i
    #define OTL_UNICODE // Enable Unicode OTL for OCI9i
    #include <otlv4.h> // include the OTL 4.0 header file

    otl_connect db; // connect object

    void insert()
    // insert rows into table
    {
     otl_long_unicode_string f2(70000); // define long unicode string variable
     db.set_max_long_size(70000); // set maximum long string size for connect object

     otl_stream o(1, // buffer size has to be set to 1 for operations with LONGs
                  "insert into test_tab values(:f1<int>,:f2<varchar_long>)",
                     // SQL statement
                  db // connect object
                 );

     for(int i=1;i<=20;++i){
      for(int j=0;j<50000;++j)
       f2[j]=(unsigned short) '*'; // first 128 characters of Unicode are ASCII
      f2[50000]=(unsigned short) '?'; // first 128 characters of Unicode are ASCII
      f2.set_len(50001);
      o<<i<<f2;
     }

    }

    void select()
    {
     otl_long_unicode_string f2(70000); // define long string variable
     db.set_max_long_size(70000); // set maximum long string size for connect object

     otl_stream i(1, // buffer size needs to be set to 1 for operations with LOBs
                  "select * from test_tab where f1>=:f<int> and f1<=:f*2",
                     // SELECT statement
                  db // connect object
                 );
       // create select stream

     float f1;

     i<<8; // assigning :f = 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="<<f1<<", f2="
          <<(char)f2[0] // first 128 characters of Unicode are ASCII
          <<(char)f2[f2.len()-1]<<", len="<<f2.len()<<endl;
     }

     i<<4; // assigning :f = 4
       // 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="<<(char)f2[0]
          <<(char)f2[f2.len()-1]<<", len="<<f2.len()<<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 long)"
        );  // 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=8, f2=*?, len=50001
    f1=9, f2=*?, len=50001
    f1=10, f2=*?, len=50001
    f1=11, f2=*?, len=50001
    f1=12, f2=*?, len=50001
    f1=13, f2=*?, len=50001
    f1=14, f2=*?, len=50001
    f1=15, f2=*?, len=50001
    f1=16, f2=*?, len=50001
    f1=4, f2=*?, len=50001
    f1=5, f2=*?, len=50001
    f1=6, f2=*?, len=50001
    f1=7, f2=*?, len=50001
    f1=8, f2=*?, len=50001

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