From 8affb2564b016e5317aaeba169c3a2582a9a4004 Mon Sep 17 00:00:00 2001
From: Vitor Pamplona <vitor@vitorpamplona.com>
Date: Thu, 1 Jan 2026 12:49:12 -0500
Subject: [PATCH] explains the fk index on tags

---
 .../quartz/nip01Core/store/sqlite/EventIndexesModule.kt          | 1 +
 1 file changed, 1 insertion(+)

diff --git a/quartz/src/androidMain/kotlin/com/vitorpamplona/quartz/nip01Core/store/sqlite/EventIndexesModule.kt b/quartz/src/androidMain/kotlin/com/vitorpamplona/quartz/nip01Core/store/sqlite/EventIndexesModule.kt
index bd3d90ef3..a7e887c33 100644
--- a/quartz/src/androidMain/kotlin/com/vitorpamplona/quartz/nip01Core/store/sqlite/EventIndexesModule.kt
+++ b/quartz/src/androidMain/kotlin/com/vitorpamplona/quartz/nip01Core/store/sqlite/EventIndexesModule.kt
@@ -72,6 +72,7 @@ class EventIndexesModule(
         // need to check if this is actually needed.
         db.execSQL("CREATE INDEX query_by_created_at_kind_key  ON event_headers (created_at DESC, kind, pubkey)")
 
+        // makes deletions on the event_header fast
         db.execSQL("CREATE INDEX fk_event_tags_header_id       ON event_tags (event_header_row_id)")
 
         // This is a very slow index to build (half the insert time goes here) but it is extremely effective.