Add DuckDB example notebook

tutorials/notebooks/duckdb_example.ipynb

@@ -0,0 +1,54 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# DuckDB Example\n",
+    "\n",
+    "This is a basic example of using DuckDB with LLMWare."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import duckdb\n",
+    "\n",
+    "# Connect to DuckDB\n",
+    "con = duckdb.connect(':memory:')\n",
+    "\n",
+    "# Create a simple table\n",
+    "con.execute(\"CREATE TABLE items (id INTEGER, name VARCHAR)\")\n",
+    "con.execute(\"INSERT INTO items VALUES (1, 'llmware')\")\n",
+    "\n",
+    "# Query the table\n",
+    "result = con.execute(\"SELECT * FROM items\").fetchall()\n",
+    "print(result)"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.9.0"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 4
+}