The following is a single MySQL query. Its being used to get the numbers for the coalesced grand-totals of Wikistats.
(select 'wikipedias' as name,sum(good) as ggood, sum(total) as gtotal, sum(edits) as gedits, sum(admins) as gadmins, sum(users) as gusers,sum(images) as gimages from wikipedias)
union all
(select 'wiktionaries' as name,sum(good) as ggood, sum(total) as gtotal, sum(edits) as gedits, sum(admins) as gadmins, sum(users) as gusers,sum(images) as gimages from wiktionaries)
union all
(select 'wikiquotes' as name,sum(good) as ggood, sum(total) as gtotal, sum(edits) as gedits, sum(admins) as gadmins, sum(users) as gusers,sum(images) as gimages from wikiquotes)
union all
(select 'wikibooks' as name,sum(good) as ggood, sum(total) as gtotal, sum(edits) as gedits, sum(admins) as gadmins, sum(users) as gusers,sum(images) as gimages from wikibooks)
union all
(select 'wikinews' as name,sum(good) as ggood, sum(total) as gtotal, sum(edits) as gedits, sum(admins) as gadmins, sum(users) as gusers,sum(images) as gimages from wikinews)
union all
(select 'wikisources' as name,sum(good) as ggood, sum(total) as gtotal, sum(edits) as gedits, sum(admins) as gadmins, sum(users) as gusers,sum(images) as gimages from wikisources)
union all
(select 'wikia' as name,sum(good) as ggood, sum(total) as gtotal, sum(edits) as gedits, sum(admins) as gadmins, sum(users) as gusers,sum(images) as gimages from wikia)
union all
(select 'editthis' as name,sum(good) as ggood, sum(total) as gtotal, sum(edits) as gedits, sum(admins) as gadmins, sum(users) as gusers,sum(images) as gimages from editthis)
union all
(select 'wikitravel' as name,sum(good) as ggood, sum(total) as gtotal, sum(edits) as gedits, sum(admins) as gadmins, sum(users) as gusers,sum(images) as gimages from wikitravel)
union all
(select 'mediawikis' as name,sum(good) as ggood, sum(total) as gtotal, sum(edits) as gedits, sum(admins) as gadmins, sum(users) as gusers,sum(images) as gimages from mediawikis)
union all
(select 'uncyclomedia' as name,sum(good) as ggood, sum(total) as gtotal, sum(edits) as gedits, sum(admins) as gadmins, sum(users) as gusers,sum(images) as gimages from uncyclomedia)
union all
(select 'anarchopedias' as name,sum(good) as ggood, sum(total) as gtotal, sum(edits) as gedits, sum(admins) as gadmins, sum(users) as gusers,sum(images) as gimages from anarchopedias)
order by ggood desc,gtotal desc;