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create table test(name text unique, counters int[]); insert into test (name, counters) values ('Joe', array[1,3,1,0]) on conflict (name) do update set counters = ( select array_agg(e1 + e2) from unnest(test.counters, excluded.counters) as u(e1, e2) ) returning *
name
counters
Joe
{1,3,1,0}
insert into test (name, counters) values ('Joe', array[2,0,2,1]) on conflict (name) do update set counters = ( select array_agg(e1 + e2) from unnest(test.counters, excluded.counters) as u(e1, e2) ) returning *
name
counters
Joe
{3,3,3,1}