// Connect to the database
// ...

type Row struct {
    language   string
    percentage float32
}

// SQL query execution
statement, _ := conn.Prepare(`
    SELECT
    Language, Percentage
    FROM countrylanguage
    WHERE CountryCode = 'RUS'
    ORDER BY Percentage DESC`)

// Get first row
result := statement.QueryRow()
row := new(Row)
result.Scan(&row.language, &row.percentage)
fmt.Println(row)

// Get all rows
rows, _ := statement.Query()
for rows.Next() {
    row := new(Row)
    rows.Scan(&row.language, &row.percentage)
    fmt.Println(row)
}

// Close the connection
conn.Close()