SELECT concat('sb_', namespace,'_',name,': ',value) FROM sfblog_blog_settings WHERE blog_id = 1
UNION
(SELECT concat('sb_', namespace,'_',name,': ',value) FROM sfblog_default_settings WHERE name NOT IN (SELECT name FROM sfblog_blog_settings WHERE blog_id = 1) )


DONNE :


sb_blog_setting1: plop
sb_plat_setting2: yop yop yop
sb_back_setting3: another one