FIX: consecutive_visits query wasn't properly setting 'granted_at' (3rd time's a charm)

lib/badge_queries.rb

@@ -235,15 +235,20 @@ SQL
   def self.consecutive_visits(days)
     <<~SQL
       WITH consecutive_visits AS (
-        SELECT user_id, visited_at - (DENSE_RANK() OVER (PARTITION BY user_id ORDER BY visited_at))::int "start"
+        SELECT user_id
+             , visited_at
+             , visited_at - (DENSE_RANK() OVER (PARTITION BY user_id ORDER BY visited_at))::int s
           FROM user_visits
       ), visits AS (
-        SELECT user_id, "start", DENSE_RANK() OVER (PARTITION BY user_id ORDER BY "start") "rank"
+        SELECT user_id
+             , MIN(visited_at) "start"
+             , DENSE_RANK() OVER (PARTITION BY user_id ORDER BY s) "rank"
           FROM consecutive_visits
-      GROUP BY user_id, "start"
+      GROUP BY user_id, s
         HAVING COUNT(*) >= #{days}
       )
-      SELECT user_id, "start" + interval '#{days} days' "granted_at"
+      SELECT user_id
+           , "start" + interval '#{days} days' "granted_at"
         FROM visits
        WHERE "rank" = 1
     SQL