exercises/010-check_setup.ipynb

{
 "cells": [
  {
   "attachments": {},
   "cell_type": "markdown",
   "id": "4bcc6ef9",
   "metadata": {},
   "source": [
    "## Check SAP HANA Client for Python is installed"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "c6866fbf-5ca6-45a5-a234-d0ad3db16545",
   "metadata": {},
   "outputs": [],
   "source": [
    "import hana_ml\n",
    "print(f\"SAP HANA Client for Python: {hana_ml.__version__}\")"
   ]
  },
  {
   "attachments": {},
   "cell_type": "markdown",
   "id": "57d22639",
   "metadata": {},
   "source": [
    "The latest version and its documentation can be checked at https://pypi.org/project/hana-ml/#history"
   ]
  },
  {
   "attachments": {},
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   "id": "bd79a425",
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   "source": [
    "## Load the user connection data and connect to the SAP HANA database instance\n",
    "\n",
    "👉🏻 Before running the next cell make sure:\n",
    "\n",
    "1. [./00-setup/temp_user.ini](00-setup/temp_user.ini) is copied to [./00-setup/user.ini](00-setup/user.ini) and \n",
    "2. the user and the password given to you by the instructor are updated in `user.ini` file \n",
    "\n",
    "👆🏻\n",
    "\n",
    "👇🏼\n",
    "![Set user](00-setup/img/check_userini02.png)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "d94aaec7",
   "metadata": {},
   "outputs": [],
   "source": [
    "import os\n",
    "file_path = './00-setup/user.ini'  # Replace this with the path to your file\n",
    "\n",
    "if os.path.exists(file_path):\n",
    "    print(f\"The file '{file_path}' exists.\")\n",
    "    from hana_ml.algorithms.pal.utility import Settings\n",
    "    myhost, myport, myuser, mypwd = Settings.load_config(file_path)\n",
    "    if myhost == '' or myport == 0 or myuser == '' or mypwd == '':\n",
    "        print(\"At least one required connection parameter is empty.\")\n",
    "    else:\n",
    "        print(f\"Connection to SAP HANA db at {myhost}:{myport} \\nwill be attempted for the user {myuser}\")\n",
    "else:\n",
    "    print(f\"The file '{file_path}' does not exist!\\nCreate and configure it first.\")\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "442c848b-c11e-4115-89fe-7336b15681ae",
   "metadata": {},
   "outputs": [],
   "source": [
    "from hana_ml import dataframe as hdf\n",
    "myconn=hdf.ConnectionContext(\n",
    "    address=myhost, \n",
    "    port=myport, \n",
    "    user=myuser,\n",
    "    password=mypwd\n",
    ")\n",
    "print(f\"Connected to SAP HANA db version {myconn.hana_version()} \\nat {myhost}:{myport} as user {myuser}\")"
   ]
  },
  {
   "attachments": {},
   "cell_type": "markdown",
   "id": "0235f6c2",
   "metadata": {},
   "source": [
    "## Execute an SQL query on SAP HANA database and get the result displayed"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "19475af6-6e12-4fb3-8df9-50ce54de9194",
   "metadata": {},
   "outputs": [],
   "source": [
    "print(f'Current time on the SAP HANA server: {myconn.sql(\"SELECT NOW() FROM DUMMY\").collect().CURRENT_TIMESTAMP[0]}')"
   ]
  },
  {
   "attachments": {},
   "cell_type": "markdown",
   "id": "9bfd54f6",
   "metadata": {},
   "source": [
    "🤓 **Let's discuss**:\n",
    "1. SAP HANA Client: https://help.sap.com/docs/SAP_HANA_CLIENT\n",
    "1. SAP HANA Client's Python driver: https://help.sap.com/docs/SAP_HANA_CLIENT/f1b440ded6144a54ada97ff95dac7adf/f3b8fabf34324302b123297cdbe710f0.html\n",
    "1. Python Machine Learning Client for SAP HANA: https://help.sap.com/doc/cd94b08fe2e041c2ba778374572ddba9/2023_1_QRC/en-US/hana_ml.html"
   ]
  }
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