Vitality Metrics: Most Watchers

This query is marked as a draft This query has been published by Zar2gar1.

This query should find the English Wiki articles (only main namespace) with the most watchers and provides a count.

However, watchlist is one of the redacted tables in the replicas. So this will stay on ice for now.

SQL

# Set a query timeout for politeness
SET STATEMENT max_statement_time = 300 FOR

# Indices don't allow for an efficient join ...
# ... so we'll just grab page IDs for now
SELECT
  wl_title AS "Article Name",
  COUNT(wl_user) AS "Number of Watchers"
FROM watchlist

# The namespace key allows us to filter
WHERE wl_namespace = 0

# Ordering on a COUNT should be OK
GROUP BY 1 ORDER BY 2 DESC
# TESTING: Start with a small limit to gauge time
LIMIT 100;

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