Chatbot: Fix a few details in telemetry diagnostics assistant (#916)

Author: amotl

topic/chatbot/table-augmented-generation/workshop/telemetry-diagnostics-assistant.ipynb

@@ -709,7 +709,7 @@
     "load_dotenv()\n",
     "\n",
     "# Create OpenAI client using environment variable\n",
-    "client = OpenAI(api_key=os.getenv(\"OPENAI_API_KEY\"))\n",
+    "openai_client = OpenAI(api_key=os.getenv(\"OPENAI_API_KEY\"))\n",
     "\n",
     "# Create a natural language → SQL prompt with real schema\n",
     "def nl_to_sql_prompt(question, table_name=\"motor_readings\"):\n",
@@ -747,7 +747,7 @@
     "def get_sql_from_llm(question, table_name=\"motor_readings\"):\n",
     "    prompt = nl_to_sql_prompt(question, table_name)\n",
     "\n",
-    "    response = client.chat.completions.create(\n",
+    "    response = openai_client.chat.completions.create(\n",
     "        model=\"gpt-3.5-turbo\",\n",
     "        messages=[\n",
     "            {\"role\": \"system\", \"content\": \"You are a helpful assistant that only outputs SQL queries compatible with CrateDB.\"},\n",
@@ -1064,7 +1064,8 @@
     "\n",
     "# Store in CrateDB\n",
     "df_manuals.to_sql(\"machine_manuals\", con=engine, if_exists=\"replace\", index=False)\n",
-    "print(f\"✅ Stored manuals for {len(df_manuals)} machines in 'machine_manuals'.\")"
+    "print(f\"✅ Stored manuals for {len(df_manuals)} machines in 'machine_manuals'.\")\n",
+    "connection.execute(sa.text(\"REFRESH TABLE machine_manuals;\"))"
    ]
   },
   {