r, err := Open("./examples/demo-12-zlib.orc")
if err != nil {
    log.Fatal(err)
}
defer r.Close()

// Create a new Cursor reading the provided columns.
c := r.Select("_col0", "_col1", "_col2")

// Iterate over each stripe in the file.
for c.Stripes() {
    
    // Iterate over each row in the stripe.
    for c.Next() {
          
        // Retrieve a slice of interface values for the current row.
        log.Println(c.Row())
        
    }
   
}

if err := c.Err(); err != nil {
    log.Fatal(err)
}