From 6f014d1580e117b8281b3565ad4bc3a0aeecced7 Mon Sep 17 00:00:00 2001
From: rosa <rosa@luma.wtf>
Date: Wed, 18 Feb 2026 14:56:40 +0100
Subject: [PATCH] docs(dendrite): delete the alias of an empty room

---
 compose/dendrite/README.md | 13 +++++++++++++
 1 file changed, 13 insertions(+)
 create mode 100644 compose/dendrite/README.md

diff --git a/compose/dendrite/README.md b/compose/dendrite/README.md
new file mode 100644
index 0000000..e35660e
--- /dev/null
+++ b/compose/dendrite/README.md
@@ -0,0 +1,13 @@
+# Dendrite Matrix Server
+
+## Notes
+
+### Delete the alias of an empty room
+- Open an SQL shell in the postgres container: `sudo docker exec -it <postgres container id> psql -U dendrite dendrite`
+- List the tables: `\dt`
+- Take note of the aliases table name (it should be `roomserver_room_aliases`)
+- Verify the alias exists: `SELECT * FROM roomserver_room_aliases WHERE alias = '#<alias>:<domain>';`
+  - This should return a row, if it doesn't check for any spelling mistakes
+- Delete the entry from the table: `DELETE FROM roomserver_room_aliases WHERE alias = '#<alias>:<domain>';`
+  - This should return `DELETE 1`
+- Exit the shell: `\q`
\ No newline at end of file