AP districts - Previous month edits, unique human editors

SQL

SET @pmonthbegin=DATE_FORMAT(CURDATE() - INTERVAL 1 MONTH,'%Y-%m-01')
SET @nmonthbegin=DATE_FORMAT(CAST(@pmonthbegin) AS DATE + INTERVAL 1 MONTH, '%Y-%m-01')
SET @pmonthts=REPLACE(@pmonth,"-","")
SET @nmonthts=REPLACE(@nmonth,"-","")
SELECT 
    subqres.page_title,
    COUNT(subqres.user_name) as count_editors,
    SUM(subqres.Edits) as tot_edit,
    @pmonthts,
    @nmonthts
FROM (SELECT
   page_title,
   user_name,
   COUNT(*) as Edits
FROM page
JOIN categorylinks ON cl_from = page_id  AND cl_to="Districts_of_Andhra_Pradesh" AND cl_type="page"
JOIN revision      ON page_id = rev_page
JOIN actor      ON rev_actor = actor_id
JOIN user   ON user_id =actor_user
where   rev_actor != 0 AND page_namespace=0 
AND LEFT(rev_timestamp,8)  >= @pmonthts  AND LEFT(rev_timestamp,8)  < @nmonthts
AND NOT (user_name LIKE '%AWB%' OR user_name  LIKE '%Bot%' OR user_name LIKE'%bot%' OR  user_name LIKE '%BOT%' OR user_name ='CommonsDelinker')
GROUP BY page_title,user_name) AS subqres
GROUP BY subqres.page_title
ORDER BY count_editors DESC, page_title ASC
LIMIT 100;
SQL

Checking query status...
