Update docs/training_manual/spatial_databases/geometry.rst

Co-authored-by: Harrissou Sant-anna <[email protected]>
qgis · Nov 29, 2024 · bbf9788 · bbf9788
1 parent 72683fd
commit bbf9788
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/docs/training_manual/spatial_databases/geometry.rst b/docs/training_manual/spatial_databases/geometry.rst
@@ -247,8 +247,8 @@ for that city and computing a buffer around that area.
       SELECT * FROM 
       (
         SELECT 
-          ROW_NUMBER() over (order by city_id) AS city_id,
-          ST_BUFFER(ST_CONVEXHULL(ST_COLLECT(the_geom)),1) AS geometry
+          ROW_NUMBER() over (order by city_id)::integer AS city_id,
+          ST_CONVEXHULL(ST_COLLECT(geom)) AS geom
             FROM people
             GROUP BY city_id
       ) convexHulls;