Refactor SQL query for page rankings with cleaner syntax

prefer to use rank_grouping instead of _rank

Author: nimeshgit

sql/2025/webassembly/page_rankings.sql

@@ -1,22 +1,21 @@
-# Query to get count of pages which use wasm at page ranking intervals.
-
 SELECT
-  client,
-  _rank AS rank_grouping,
-  CASE
-    WHEN _rank = 100000000 THEN 'all'
-    ELSE CAST(_rank AS STRING)
-  END AS ranking,
-  COUNT(DISTINCT page) AS pages
+client,
+rank_grouping,
+CASE
+WHEN rank_grouping = 100000000 THEN 'all'
+ELSE CAST(rank_grouping AS STRING)
+END AS ranking,
+COUNT(DISTINCT page) AS pages
 FROM
-  `httparchive.crawl.requests`,
-  UNNEST([1000, 10000, 100000, 1000000, 10000000, 100000000]) AS _rank
+`httparchive.crawl.requests`,
+UNNEST([1000, 10000, 100000, 1000000, 10000000, 100000000]) AS rank_grouping
 WHERE
-  date = '2025-07-01' AND
-  type = 'wasm' AND
-  rank <= _rank
+date = '2025-07-01' AND
+type = 'wasm' AND
+rank <= rank_grouping
 GROUP BY
-  client,
-  rank
+client,
+rank_grouping
 ORDER BY
-  rank
+client,
+rank_grouping