pr4

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   "source": [
    "# Challenge"
   ]
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   "source": [
    "- Add a new attribute, expore code that is a string of lenght 15, to products table\n",
    "\n",
    "- Ten new products with export_code set to \"Restricted\" must be added\n",
    "\n",
    "- Existing products must have their export_code column set to \"Unrestricted\"\n",
    "\n",
    "- Describe DDL commands required to implement these changes"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Solution"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "- ALTER TABLE ... ADD COLUMN to add export_code\n",
    "- 10 INSERT statements with product data\n",
    "- UPDATE statement to set export_code to \"Unrestricted\" WHERE export_code IS NULL"
   ]
  }
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