diff --git a/generate/database/mongodb/20240829054502_comment.up.js b/generate/database/mongodb/20240829054502_comment.up.js
new file mode 100644
index 0000000..119f0ad
--- /dev/null
+++ b/generate/database/mongodb/20240829054502_comment.up.js
@@ -0,0 +1,5 @@
+use digimon_tweeting;
+db.comment.createIndex({ "post_id": 1,"createAt":1});
+
+
+// TODO 看是否有要刪除過多的索引，要在測試一下
\ No newline at end of file