X-Git-Url: https://git.openstreetmap.org/nominatim.git/blobdiff_plain/a4733eed90b2ee5e7b0aac2da3f8e71cffd340a6..cf98cff2a166eb35ed2c946e03f1610069bdd1d4:/nominatim/tools/postcodes.py

diff --git a/nominatim/tools/postcodes.py b/nominatim/tools/postcodes.py
index fd355079..3f8f4e38 100644
--- a/nominatim/tools/postcodes.py
+++ b/nominatim/tools/postcodes.py
@@ -165,15 +165,16 @@ def update_postcodes(dsn, project_dir, tokenizer):
             with conn.cursor(name="placex_postcodes") as cur:
                 cur.execute("""
                 SELECT cc as country_code, pc, ST_X(centroid), ST_Y(centroid)
-                FROM (
-                    SELECT 
-                        COALESCE(plx.country_code, get_country_code(ST_Centroid(pl.geometry))) as cc,
+                FROM (SELECT
+                        COALESCE(plx.country_code,
+                                 get_country_code(ST_Centroid(pl.geometry))) as cc,
                         token_normalized_postcode(pl.address->'postcode') as pc,
-                        ST_Centroid(ST_Collect(ST_Centroid(pl.geometry))) as centroid
-                    FROM place AS pl LEFT OUTER JOIN placex AS plx ON pl.osm_id = plx.osm_id AND pl.osm_type = plx.osm_type
+                        ST_Centroid(ST_Collect(COALESCE(plx.centroid,
+                                                        ST_Centroid(pl.geometry)))) as centroid
+                      FROM place AS pl LEFT OUTER JOIN placex AS plx
+                             ON pl.osm_id = plx.osm_id AND pl.osm_type = plx.osm_type
                     WHERE pl.address ? 'postcode' AND pl.geometry IS NOT null
-                    GROUP BY cc, pc
-                ) xx
+                    GROUP BY cc, pc) xx
                 WHERE pc IS NOT null AND cc IS NOT null
                 ORDER BY country_code, pc""")
 
@@ -204,8 +205,4 @@ def can_compute(dsn):
         postcodes can be computed.
     """
     with connect(dsn) as conn:
-        with conn.cursor() as cur:
-            cur.execute("""
-                select exists(select 1 from information_schema.tables where table_name='place')
-            """)
-            return cur.fetchone()[0]
+        return conn.table_exists('place')