Le 2014-07-17 à 09:08, Arup Rakshit <aruprakshit@xxxxxxxxxxxxxx> a écrit : > How can I group all children by their parent ? > > id email parent_id > 1 test@xxxxxxxx nil > 2 test1@xxxxxxxx 1 > 3 email 1 > 4 email 2 > 5 email nil > 6 email 3 ORDER BY parent_id, id ? François Beausoleil