Its clear, union concat the two results. But he can also use this join version, if its the intention. select t1.id, sum(t1.amount), t2.id, sum(t2.amount) from table1 as t1, table2 as t2 where t1.id=t2.id; Ciao Maik
pgsql-sql by date:
Соглашаюсь с условиями обработки персональных данных