From a7566fb6b3f46896bbe94e1ae96206f6ec699cab Mon Sep 17 00:00:00 2001
From: gluap <44007906+gluap@users.noreply.github.com>
Date: Sat, 25 Mar 2023 17:43:32 +0100
Subject: [PATCH] restrict to admin_level 6
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Only compute the regions layer at the required admin level 6 (kreise/kreisfreie Städte)- we're not using other levels yet and this speeds it up notably.
---
 tile-generator/layers/obs_regions/layer.sql | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tile-generator/layers/obs_regions/layer.sql b/tile-generator/layers/obs_regions/layer.sql
index fda2a44..d9d3258 100644
--- a/tile-generator/layers/obs_regions/layer.sql
+++ b/tile-generator/layers/obs_regions/layer.sql
@@ -20,6 +20,7 @@ RETURNS TABLE(
     WHERE
       zoom_level >= 4 AND
       zoom_level <= 12 AND
+      region.admin_level = 6 AND
       ST_Transform(region.geometry, 3857) && bbox
     GROUP BY region.relation_id, region.name, region.geometry, region.admin_level