Conversation_principale = resultat_transaction(transaction(fun() ->
Curseur = qlc:cursor(q([E#minichat.id || E <- qlc:sort(table(minichat), [{order, descending}])])),
{CP, Plus} = conversation_principale(Curseur, Conversations, N, P),
qlc:delete_cursor(Curseur),
Conversation_principale = resultat_transaction(transaction(fun() ->
Curseur = qlc:cursor(q([E#minichat.id || E <- qlc:sort(table(minichat), [{order, descending}])])),
{CP, Plus} = conversation_principale(Curseur, Conversations, N, P),
qlc:delete_cursor(Curseur),