cleanup, docs

site/doc/pages/mysql_insert_id.txt

@@ -14,4 +14,11 @@ Returns the last automatically assigned row ID used by the current MySQL connect
 This is typically used after an `INSERT` into a table with an `AUTO_INCREMENT` primary key.
 
 :example
-print("mysql_insert_id is resource-bound; configure the service or connection, then call it in request code.\n");
+MySQL* db = mysql_connect();
+if(db != 0)
+{
+    DValue row = mysql_query(db, "select last_insert_id() as id");
+    print("mysql_insert_id() returns the last AUTO_INCREMENT id for this connection (currently ", mysql_insert_id(db), ")\n");
+    mysql_disconnect(db);
+}
+else print("(requires a reachable MySQL server)\n");