Fix example

Author: auxten

example.js

@@ -1,13 +1,24 @@
-const addon = require(".");
-const db = new addon.db("CSV");
+const { query, Session } = require(".");
+
 var result;
 
-// Test query
-result = db.query("SELECT version()");
-console.log(result);
+// Test standalone query
+result = query("SELECT version(), 'Hello chDB', chdb()", "CSV");
+console.log("Standalone Query Result:", result);
+
+// Test session query
+// Create a new session instance
+const session = new Session("./chdb-node-tmp");
+result = session.query("SELECT 123", "CSV")
+console.log("Session Query Result:", result);
+result = session.query("CREATE DATABASE IF NOT EXISTS testdb;" +
+    "CREATE TABLE IF NOT EXISTS testdb.testtable (id UInt32) ENGINE = MergeTree() ORDER BY id;");
+
+session.query("USE testdb; INSERT INTO testtable VALUES (1), (2), (3);")
+
+result = session.query("SELECT * FROM testtable;")
+console.log("Session Query Result:", result);
 
-// Test session
-db.session("CREATE FUNCTION IF NOT EXISTS hello AS () -> 'chDB'");
-result = db.session("SELECT hello()", "TabSeparated");
 
-console.log(result);
+// Clean up the session
+session.cleanup();