Initial Product release

src/data/playlists.js

@@ -0,0 +1,8 @@
+async function fetchPlaylistById(pool, id) {
+  const [rows] = await pool.query('SELECT * FROM playlists WHERE id = ?', [id]);
+  return rows[0] || null;
+}
+
+module.exports = {
+  fetchPlaylistById
+};