From: marc tobias <mtmail@gmx.net>
Date: Wed, 30 Sep 2020 12:28:20 +0000 (+0200)
Subject: migration guide: idx_placex_geometry_reverse_lookupPoint can be dropped
X-Git-Tag: v3.6.0~60^2
X-Git-Url: https://git.openstreetmap.org./nominatim.git/commitdiff_plain/eeffe2caf46b4faed0531099d0b4b98502b1d43a?ds=inline;hp=--cc

migration guide: idx_placex_geometry_reverse_lookupPoint can be dropped
---

eeffe2caf46b4faed0531099d0b4b98502b1d43a
diff --git a/docs/admin/Migration.md b/docs/admin/Migration.md
index 917d3785..b731c37c 100644
--- a/docs/admin/Migration.md
+++ b/docs/admin/Migration.md
@@ -24,6 +24,13 @@ You can then drop the old index with:
 DROP INDEX idx_placex_pendingsector
 ```
 
+### Unused index
+
+This index has been unused ever since the query using it was changed two years ago. Saves about 12GB on a planet installation.
+
+```sql
+DROP INDEX idx_placex_geometry_reverse_lookupPoint
+```
 
 ### Switching to dotenv