Rename planet_osm_line_name index to planet_osm_line_label and includ…

…e rows where ref IS NOT NULL

Update text-line layer query to take advantage of the updated index

indexes.sql

@@ -4,9 +4,9 @@
 CREATE INDEX planet_osm_line_ferry
   ON planet_osm_line USING GIST (way)
   WHERE route = 'ferry' AND osm_id > 0;
-CREATE INDEX planet_osm_line_name
+CREATE INDEX planet_osm_line_label
   ON planet_osm_line USING GIST (way)
-  WHERE name IS NOT NULL;
+  WHERE name IS NOT NULL OR ref IS NOT NULL;
 CREATE INDEX planet_osm_line_river
   ON planet_osm_line USING GIST (way)
   WHERE waterway = 'river';

indexes.yml

@@ -7,8 +7,8 @@ point:
   place:
     where: place IS NOT NULL AND name IS NOT NULL
 line:
-  name:
-    where: name IS NOT NULL
+  label:
+    where: name IS NOT NULL OR ref IS NOT NULL
   ferry:
     where: route = 'ferry' AND osm_id > 0
   river:

project.mml

@@ -2042,7 +2042,7 @@ Layer:
               OR waterway IN ('dam', 'weir')
               OR "natural" IN ('arete', 'cliff', 'ridge'))
             AND name IS NOT NULL)
-            OR tags @> 'golf=>hole'
+            OR (tags @> 'golf=>hole' AND ref IS NOT NULL)
         ) AS text_line
     properties:
       minzoom: 10