Something along the lines of this...first I'd combine your conference size queries into one view:

-- Or maybe conf_size_counts ??
CREATE VIEW conf_sizes AS
SELECT
  c2.id,
  sum(if(value<11,1,0)) AS "conf10",
  sum(if(value<20 and value>10,1,0)) AS "conf20",
  sum(if(value>20,1,0)) AS "conf30"
FROM extension ext, client c1, client c2, extension_prefs exp
WHERE ext.client_id = c1.id
  AND exp.param="conf_size"
  AND ext.type="conference"
  AND c1.parent_client_id = c2.id
  AND exp.extension_id = ext.id
GROUP BY c2.id;

[download]
Then modify your main query as:

SELECT c.id, c.name, cs.conf10, cs.conf20, cs.conf30
FROM client c LEFT OUTER JOIN conf_sizes cs ON c.id = cs.id
WHERE c.level = 50
  AND c.status = 1

[download]
The rest of the views and joins I leave for you...

In reply to Re^5: Help with MySQL SELECT into multidimensional array by runrig
in thread Help with MySQL SELECT into multidimensional array by btongeorge

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