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create table competition ( id integer, time integer ); insert into competition values (1, 2); insert into competition values (2, 10); insert into competition values (3, 2); insert into competition values (4, 7); insert into competition values (5, 4); insert into competition values (6, 10); insert into competition values (7, 15); select unnest(arr) as id, time, 4 as place from ( select array_agg(id) as arr, time from competition group by time order by time offset 4 - 1 limit 1 ) as fourth
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Distinct row aggregation with ordering - stackoverflow.com/q/43249053/4116017
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