Sample-Atlas-DB.ipynb

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   "source": [
    "# set up on Atlas first\n",
    "# https://allenai.org/data/cord-19\n",
    "# "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "#!pip install pymongo\n",
    "#!pip install pymongo[srv]\n",
    "#!pip install dnspython"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "import pymongo"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "from pymongo import MongoClient"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "# note - this URL may not work, as I may take it off line when the workshop is not in session\n",
    "# you'll need to set up a username and password for your MongoDB and add them to the URL below. \n",
    "MDB_URL = \"mongodb+srv://pymongo_workshop_user:pymongo_workshop_password@python-mongo-workshop.unmjr.gcp.mongodb.net/test?retryWrites=true&w=majority\""
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "client = MongoClient(MDB_URL)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "client.list_database_names()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "db = client.get_database(\"sample_restaurants\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "db.list_collection_names()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "restaurants = db.get_collection(\"restaurants\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "restaurants"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "for r in restaurants.find_one():\n",
    "    print(r)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "for r in restaurants.find({'cuisine': 'Irish'}):\n",
    "    print(r)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "for r in restaurants.find({'cuisine': 'Irish'}, {'_id':0, 'borough': 1}):\n",
    "    print(r['borough'])"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "for r in restaurants.find({ '$or' : [ { 'cuisine' : 'Irish' }, { 'cuisine' : 'Indian' } ] }):\n",
    "    print(r['name'], r['borough'], r['cuisine'])"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "for r in restaurants.find({'name': 'Rogers Irish Tavern' } ):\n",
    "    print(r['borough'], r['cuisine'])"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "for r in restaurants.find({'cuisine': { '$in': [ \"Irish\", \"Indian\" ] } }, \n",
    "                          {'name': 1, 'cuisine': 1, 'borough': 1, '_id': 0}):\n",
    "    print(r['borough'], r['cuisine'])"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "db.restaurants.distinct(\"cuisine\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "for agg in db.restaurants.aggregate([{'$group':{'_id':'$cuisine','count':{'$sum': 1}}}]):\n",
    "    print(agg)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "import re\n",
    "regx = re.compile(\"^deli\", re.IGNORECASE)\n",
    "for r in restaurants.find({'name': { '$regex': regx } }):\n",
    "    print(r['name'])"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "agg = db.restaurants.aggregate([{'$group':{'_id':'$cuisine','count':{'$sum': 1}}}])"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "for a in agg:\n",
    "    print(a)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "agg = db.restaurants.aggregate([{'$group':{'_id':'$cuisine','count':{'$sum': 1}}}])"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "for a in agg:\n",
    "    print(a)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "import pandas as pd"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "df = pd.DataFrame.from_records(restaurants.find({'cuisine': 'Irish'}))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "df"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
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