Top edited monthly articles in 2016 on pl.wiki

This query is marked as a draft This query has been published by The Polish.
SQL

USE plwiki_p;
(SELECT month, page_namespace, page_title, edits 
FROM (
   SELECT LEFT(rev_timestamp, 6) AS month, rev_page, COUNT(*) AS edits
   FROM revision
   WHERE rev_timestamp BETWEEN "201601" AND "201602"
   GROUP BY month, rev_page
   ORDER BY edits DESC
   LIMIT 500
) AS top_page_edits 
INNER JOIN page ON rev_page = page_id
WHERE page_namespace = 0
ORDER BY page_namespace, edits DESC
LIMIT 20)

UNION ALL 

(SELECT month, page_namespace, page_title, edits 
FROM (
   SELECT LEFT(rev_timestamp, 6) AS month, rev_page, COUNT(*) AS edits
   FROM revision
   WHERE rev_timestamp BETWEEN "201602" AND "201603"
   GROUP BY month, rev_page
   ORDER BY edits DESC
   LIMIT 500
) AS top_page_edits 
INNER JOIN page ON rev_page = page_id
WHERE page_namespace = 0
ORDER BY page_namespace, edits DESC
LIMIT 20)

UNION ALL 

(SELECT month, page_namespace, page_title, edits 
FROM (
   SELECT LEFT(rev_timestamp, 6) AS month, rev_page, COUNT(*) AS edits
   FROM revision
   WHERE rev_timestamp BETWEEN "201603" AND "201604"
   GROUP BY month, rev_page
   ORDER BY edits DESC
   LIMIT 500
) AS top_page_edits 
INNER JOIN page ON rev_page = page_id
WHERE page_namespace = 0
ORDER BY page_namespace, edits DESC
LIMIT 20)

UNION ALL 

(SELECT month, page_namespace, page_title, edits 
FROM (
   SELECT LEFT(rev_timestamp, 6) AS month, rev_page, COUNT(*) AS edits
   FROM revision
   WHERE rev_timestamp BETWEEN "201604" AND "201605"
   GROUP BY month, rev_page
   ORDER BY edits DESC
   LIMIT 500
) AS top_page_edits 
INNER JOIN page ON rev_page = page_id
WHERE page_namespace = 0
ORDER BY page_namespace, edits DESC
LIMIT 20)

UNION ALL 

(SELECT month, page_namespace, page_title, edits 
FROM (
   SELECT LEFT(rev_timestamp, 6) AS month, rev_page, COUNT(*) AS edits
   FROM revision
   WHERE rev_timestamp BETWEEN "201605" AND "201606"
   GROUP BY month, rev_page
   ORDER BY edits DESC
   LIMIT 500
) AS top_page_edits 
INNER JOIN page ON rev_page = page_id
WHERE page_namespace = 0
ORDER BY page_namespace, edits DESC
LIMIT 20)

UNION ALL 

(SELECT month, page_namespace, page_title, edits 
FROM (
   SELECT LEFT(rev_timestamp, 6) AS month, rev_page, COUNT(*) AS edits
   FROM revision
   WHERE rev_timestamp BETWEEN "201606" AND "201607"
   GROUP BY month, rev_page
   ORDER BY edits DESC
   LIMIT 500
) AS top_page_edits 
INNER JOIN page ON rev_page = page_id
WHERE page_namespace = 0
ORDER BY page_namespace, edits DESC
LIMIT 20)

UNION ALL 

(SELECT month, page_namespace, page_title, edits 
FROM (
   SELECT LEFT(rev_timestamp, 6) AS month, rev_page, COUNT(*) AS edits
   FROM revision
   WHERE rev_timestamp BETWEEN "201607" AND "201608"
   GROUP BY month, rev_page
   ORDER BY edits DESC
   LIMIT 500
) AS top_page_edits 
INNER JOIN page ON rev_page = page_id
WHERE page_namespace = 0
ORDER BY page_namespace, edits DE25SC
LIMIT 20)

UNION ALL 

(SELECT month, page_namespace, page_title, edits 
FROM (
   SELECT LEFT(rev_timestamp, 6) AS month, rev_page, COUNT(*) AS edits
   FROM revision
   WHERE rev_timestamp BETWEEN "201608" AND "201609"
   GROUP BY month, rev_page
   ORDER BY edits DESC
   LIMIT 500
) AS top_page_edits 
INNER JOIN page ON rev_page = page_id
WHERE page_namespace = 0
ORDER BY page_namespace, edits DESC
LIMIT 20)

UNION ALL 

(SELECT month, page_namespace, page_title, edits 
FROM (
   SELECT LEFT(rev_timestamp, 6) AS month, rev_page, COUNT(*) AS edits
   FROM revision
   WHERE rev_timestamp BETWEEN "201609" AND "201610"
   GROUP BY month, rev_page
   ORDER BY edits DESC
   LIMIT 500
) AS top_page_edits 
INNER JOIN page ON rev_page = page_id
WHERE page_namespace = 0
ORDER BY page_namespace, edits DESC
LIMIT 20)

UNION ALL 

(SELECT month, page_namespace, page_title, edits 
FROM (
   SELECT LEFT(rev_timestamp, 6) AS month, rev_page, COUNT(*) AS edits
   FROM revision
   WHERE rev_timestamp BETWEEN "201610" AND "201611"
   GROUP BY month, rev_page
   ORDER BY edits DESC
   LIMIT 500
) AS top_page_edits 
INNER JOIN page ON rev_page = page_id
WHERE page_namespace = 0
ORDER BY page_namespace, edits DESC
LIMIT 20)

UNION ALL 

(SELECT month, page_namespace, page_title, edits 
FROM (
   SELECT LEFT(rev_timestamp, 6) AS month, rev_page, COUNT(*) AS edits
   FROM revision
   WHERE rev_timestamp BETWEEN "201611" AND "201612"
   GROUP BY month, rev_page
   ORDER BY edits DESC
   LIMIT 500
) AS top_page_edits 
INNER JOIN page ON rev_page = page_id
WHERE page_namespace = 0
ORDER BY page_namespace, edits DESC
LIMIT 20)

UNION ALL 

(SELECT month, page_namespace, page_title, edits 
FROM (
   SELECT LEFT(rev_timestamp, 6) AS month, rev_page, COUNT(*) AS edits
   FROM revision
   WHERE rev_timestamp BETWEEN "201612" AND "201701"
   GROUP BY month, rev_page
   ORDER BY edits DESC
   LIMIT 500
) AS top_page_edits 
INNER JOIN page ON rev_page = page_id
WHERE page_namespace = 0
ORDER BY page_namespace, edits DESC
LIMIT 20);
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